Let's enjoy 'Think & Try' !
(for Children and Highschool students)
Editor: Toru Nakagawa
Last updated: Jun. 26, 2015

For solving problems creatively
(for Students and the General public)
  Social Problems
Editor: Toru Nakagawa
Last updated: Aug. 14, 2018

Methods of creative problem solving
(for Engineers and Researchers novice to TRIZ)
Editor: Toru Nakagawa
Last updated: Aug. 14, 2018

Practices and methodologies of Creative problem solving
(for Practitioners and Experts)
Editor: Toru Nakagawa
Last updated: Aug. 14, 2018

TRIZ HomePage in Japan  Logo
This home page serves as an open forum of information exchange for better understanding and usage of Creative Problem Solving Methodologies, especially based in Japan.  Readers' contributions are very welcome, including introductory articles, papers, case studies, news, questions, comments, etc
Pages under this directory are the English versions. 
Click the hyper-linked keywords or the  buttons.
The  buttons guide you to the Japanese pages.
Most articles are posted in the two languages, but some are only in either of them.  

Last Updated:  August 14, 2018  
Editor:  Toru Nakagawa 
(Professor Emeritus, Osaka Gakuin Univ.)
Last Updated:
  August 14, 2018

Established on Nov. 1, 1998

visits since Nov. 1, 2005

Four Entrance Pages have been introduced.  You may be guided through them to readable/useful articles depending on your situations and interests.   Free xml sitemap generator

New Information (for the latest 9 months) are shown below in the present page.  Articles are marked in 5 different colors:   ( old or not classified).  (Oct. 17, 2014)

Let's enjoy 'Think & Try' !

(for Children and Highschool students)

(1) Everything is interesting!
(2) Watch and find it!
(3) Think 'Why?'.
(4) Learn how it works.
(5) Understand the function.
(6) Think for yourself.
(7) Imagine the ideal.
(8) Collect different examples.
(9) Try to devise something new!
(10) Information for teachers and parents

For solving problems creatively

(for Students and the General public)

(1) Necessity and importance of addressing problems
(2) Creativity and enlightenment
(3) Different methods of creative problem solving
(4) Understanding the problems and needs
(5) Analyzing the problem and imagining the ideal
(6) Generating solution ideas and trying to implement them
(7) Case studies in various fields
(8) Addressing to familiar problems and problems in society
  Social Problems
(9) Information sources and learning opportunities
(10) Miscellaneous

Methods of creative problem solving

(for Engineers and Researchers novice to TRIZ)

(1) Purposes and significance of 'Creative problem solving'
(2) What is TRIZ
(3) Information sources of TRIZ
(4) History and current situations of TRIZ
(5) Basics of TRIZ
(6) Knowledge bases and tools of TRIZ
(7) Methodologies of TRIZ and its extensions
(8) Application case studies
(9) Mastering and practicing TRIZ
(10) Questions and discussions

Practices and methodologies of Creative problem solving

(for Practitioners and Experts)

(1) Full use of the present site (New information, General index, Searching, etc.)
(2) TRIZ references, links, and software tools
(3) TRIZ news, activities, and conference reports

(4) TRIZ papers and articles

(5) TRIZ case studies of application and promotion
(6) TRIZ lecture notes and course materials
(7) Documents of TRIZ/CrePS methodologies
(8) TRIZ Forum (communications, discussions, questions, etc.)


General Index  (A) Editorial (B) References Links News & activities Software tools (C) Papers, case studies, articles, Lectures, course materials   (D) Forum General Index 
Home Page New Information for children and highschool students for students and the general public for engineers (introduction) for Practitioners CrePS System Documents USIT Manual & Case Studies WTSP (World TRIZ Sites Project) Search in this site Home Page


New Information    [Articles posted/updated within these 12 months.  marks within these 3 months.

 Forum: Sofware: Fuda-Memo is Open for Public Use: A Simplififed Fuda-Yose Software without using Excel (Akihiro Katahira ('Daiichi Kousha' ))  (Aug. 14, 2018)

The author is a unique thinker in creative problem solving (see (Jan. 18, 2015)) and the developer of Fuda-Yose Tool, which Nakagawa used much for Visual Thinking on social problems (see (Nov. 25, 2016)).  He has just developed Fuda-Memo software and introduces it in this home page.  It is another simple, nice, and useful software for Visual Thinking.  English version is not ready yet.

 TRIZ/CrePS Paper (Social problem): ‘Liberty vs Love’ and Ethics: Principal Contradiction of Human Culture and Solution Directions (Toru Nakagawa)   (Aug. 14, 2018)

Paper to be presented at ICCI2018 (International Conference on Creativity and Innovation) to be held by Japan Creativity Society on Sept. 10-12, 2018, Osaka.  Only Abstract is posted in English page (full paper will be after the Conference). 
The main purpose of this paper is (after describing the Basic Hypotheses) to discuss on 'Implications of the present Hypotheses in Comparison with the conventional/standard theories of Ethics and Philosophy'.  The discussion section has subsections: 7.1 What is the real root of the directions of Ethics ?; 7.2 Nature of Ethical Principles/Rules; 7.3 Comments on modern Ethics, especially on Utilitarianism; 7.4 Liberty vs Love Contradiction in place of Sidgwick’s Dualism of Practical Reasoning; 7.5 Discussion on Rawls’ “Principle of Justice”; 7.6 Liberty, Equity, and Fraternity; 7.7 Concepts of Good and Happiness in the Present Study.  Having studied several books in Ethics closely in Japanese, I now have confirmed my understanding that the Basic Hypotheses postulated in the present study are quite different from vaious preceeding works in reference and provide with new aspects and theory of significant importance.  In the Japanese page, Abstract, Discussions, and Conclusion are posted in Japanese translation

 WTSP Appeal:  An Appeal for Building Catalogs of TRIZ-related Sites in the World (WTSP Global Co-editors) (Jun. 25, 2018) 

WTSP Global Co-editors: Toru Nakagawa (Japan), Darrell Mann (UK), Michael Orloff (Germany), Simon Dewulf (Australia), Simon Litvin (USA), and Valeri Souchkov (Netherlands), Jun. 25, 2018

While the activities and accumulated knowledge of TRIZ and relavant methodologies become larger and larger, Internet search for them comes more difficult because of so much noise. In order to solve such a difficulty, we propose to build Catalogs of TRIZ-related Web Sites in the world. We had a prototype in 2008 and have recently demonstrated WTSP Catalog of TRIZ-related Sites in Japan . On the basis of these experiences, we are going to form a WTSP team in every country and build WTSP Catalog of each country and then of the World.  Why don't you join WTSP ? Could you please post this Appeal in your own Web site or forward it to your colleagues, as a sign of your support for the WTSP project?


  TRIZ Forum:  Memorial of Mr. Masatoshi Hotta (Toru Nakagawa, Ellen Domb)   (Jun. 25, 2018; Latest update: Jun. 26, 2018)

Mr. Masatoshi Hotta, the former Managing Director of Japan TRIZ Society, has passed away on June 8, 2018.
In 1997, leading a department in Mitsubishi Research Institute (MRI), he started to introduce TRIZ into Japan in contract with Invention Machine Corp. He organized users group and users Consortium, and held study meetings every month and completed the Japanese Edition of IM TechOptimizer software, thus contributed much to the dissemination of TRIZ to industries in Japan. He was also involved actively in organizing and managing Japan TRIZ CB and NPO Japan TRIZ Society, serving as the Managing Director. At the end of 2012 he quitted his consulting firm SKI and resigned from management of JTS.  We remember him with his strengths in organization and practices and his warm heart of accepting people.  In memory of Mr. Masatoshi Hotta we have a memorial page here.  Please send us information of him and your messages for him. 

Messages received from: Ellen Domb (USA, the former Editor of the TRIZ Journal)

 TRIZ/CrePS Paper (Social problem): 'Liberty vs. Love': The Principal Contradiction of Human Culture (2) The 'Liberty vs. Love' Contradiction and 'Ethics' at the Personal Level (D) (Toru Nakagawa)   (Jun. 25, 2018) (Jun. 25; Aug. 14, 2018)

Extended paper in Japanese (D) published in "TRIZ Home Page in Japan", Jun. 25, 2018.
 I extended the paper (A) presented in the Proceedings of Japan Creativity Society Conf. 2017 by adding much discussions, and submitted it to the Journal of JCS on Sept. 15, 2017.  But I received a rejection reply on Jan. 10, 2018, mainly because of not enough reference to preceding works on Ethics.  I revised the paper further on Jan. 14 and Feb. 27, 2018, but the review process was not opened again. ---- Since presenting my basic hypotheses thoroughly is important at this stage, I think, I am publishing the Extended Paper (D) here in "TRIZ Home Page in Japan" in the Japanese page .  English translation is not ready, but the headings of the Discussion section are shown in the brief note in English . (Jun. 25, 2018)

Full paper in English translation has been posted, in HTML and in PDF (Aug. 14, 2018). Its Discussion section has following sub-sections: 6.1 Contributions of the Creative Problem Solving Methodology (TRIZ/CrePS); 6.2 Verifications of problem situations, relevant references, and hypothesis setting; 6.3 Structure and significance of the Basic Hypotheses; 6.4 Possibility of Common Basis of Ethics in Human Culture; 6.5 Significance and influences of the First Principle Liberty: Reformism and conservatism; 6.6 Significance, influences, and limitations of the Second Guiding Principle Love: Reformism and conservatism; 6.7 Social roles of the 0th Guiding Principle Ethics; 6.8 Factors which make the Principal Contradiction of Human Culture 'Liberty vs Love' even more difficult to solve.

 TRIZ/CrePS Paper (Social problem): 'Liberty vs. Love': The Principal Contradiction of Human Culture (2) The 'Liberty vs. Love' Contradiction and 'Ethics' at the Personal Level (C) (Toru Nakagawa)   (Jun. 25, 2018)

Presented at European TRIZ Association (ETRIA), TRIZ Future Conference (TFC) 2017, Oct. 4-6, 2017 at Lappeenranta (Finland).  The paper has been published officially by ETRIA as: Nakagawa, T., 'Liberty vs. Love': The Principal Contradiction of Human Culture (2) The 'Liberty vs. Love' Contradiction and 'Ethics' at the Personal Level.  Journal of the European TRIZ Association, INNOVATOR, ISSN 1866-4180, 02/2017 Volume 04, pp. 97-104 .  http://www.etria.eu/innovator/ETRIAjournal2017vol04.pdf  . In this HP, I am posting the paper in HTML  and in PDF and the presentation slides in HTML and in PDF .

In September and October last year, I presented papers with the same title at 3 conferences: (A) Japan Creativity Society Conference (Sept. 9-10), (B) Japan TRIZ Symposium (Sept. 21-22), and (C) ETRIA TFC2017 (Oct. 4-6).  Presentations (A) and (B) were already posted in the page   (Sept. 28, 2017), so I am posting this presentation (C) in the same page.  The full paper together with the presentation slides describe the Author's findings fully in English. 

  TRIZ Forum:  Letters from Readers (Jan. - May 2018): Starting the World TRIZ Sites Project (WTSP)    (Apr. 24, 2018). 

[English page   ]  Toru Nakagawa (Japan); Alexander Kashkarov (Russia), Shahid Saleem Arshard (Australia), Maksymilian Smolnik (Poland), Juergen Jantschgi (Austria), Sebastian Koziolek (Poland), Simon Litvin (USA), Robert Adunka (Germany), Michael Orloff (Germany), Navneet Bhushan (India), Julian Vincent (UK), Tan Runhua (China), Yury Danilovsky (Korea), Denis Cavallucci (France), Dmitry Kucharavy (France), Roland De Guio (France), Sylvio Silveira Santos (Brazil), Shireen Al - Jaouni (Palestine - Jerusalem)
Starting the WTSP project is the main issue during this peirod.  Various trials for building the WTSP Catalog of TRIZ-related sites has been carried out first in Japan, and are reported and demonstrated to many TRIZ leaders across the world.  Responses by 17 TRIZ leaders are posted in this Forum page. 

[Japanese page: Toru Nakagawa; Administrator of 'Idea Generator', Chiharu Fukuda
Reports and announcements of WTSP, especially the output 'WTSP Catalog of 92 TRIZ-related sites in Japan (in Japanese)', are sent to many readers of "TRIZ Home Page in Japan". Communications with two blog site owners are recorded.

 WTSP Organization:  List of current Members, and the WTSP organization are posted. (May 19, 2018) 

 WTSP Letter:  For Forming WTSP Teams to Build WTSP Catalog in Each Country (Toru Nakagawa) (May 19, 2018) 

A WTSP Letter was sent on Apr. 24 to about 100 TRIZ leaders in the world for asking their support for the WTSP project.  We are at the stage of finishing the preparation and starting the actual work of building the WTSP Catalog, but our WTSP project is still very small and weak for carrying out the actual work.  Voluntary cooperative work are urged not only to the TRIZ leaders addressed but also to any TRIZ practitioners and TRIZ learners. 

 In summary, the current jobs for us to do in the WTSP Project are:
   (a) Please join the WTSP Project by sending your Membership Application Form to Nakagawa.
   (b) Form a team of WTSP Members in your own country; Volunteer to be Country Editor.
   (c) Record the Internet survey of TRIZ sites in your country and list the sites.
   (d) Write down introductions to the TRIZ sites one by one in your own language first.
   (e) Collect the manuscripts and make a Catalog of TRIZ-related sites of your country in your own language first.
   (f) Make a Catalog of selected TRIZ-related sites of your country in English (translation), and integrate it into the World Catalog.
Let’s work Together ! Connected !!

  WTSP Project:  Current Working Manuscripts of the WTSP Catalog are posted (Toru Nakagawa)   (Apr. 24, 2018). 

Only the sites new or revised from the Base document (version 2008) are shown.  The .docx file for each Region will be updated every 1-2 weeks, for the purpose of smooth collaboration in the WTSP project.
Update of Working files: (May 19, 2018)

  WTSP Outputs:  Catalog of TRIZ-related Sites in Japan (in English) (Toru Nakagawa)   (Apr. 4; Apr. 24, 2018). 

24 imporant TRIZ-related sites in Japan (type (a)) (and additional 68 sites) are introduced with annotation (and in shorter form) in English.  Most of the sites are written only in Japanese, but there are some sites written in English as well as in Japanese.  Some of the sites are particularly mentioned here briefly:
   01 (a) (d)  TRIZ Home Page in Japan (Toru Nakagawa):  Most active site since 1998 posting TRIZ articles and papers internationally.
   03 (a) (c)  Japan TRIZ Society (NPO):  Nation-wide center for promoting TRIZ, organizing Japan TRIZ Symposium every year.
   09 (a) (b) IDEA Corp. (Mamoru Zenko): Active consulting firm promoting integral use of QFD-TRIZ-TM and Goldfire software.
   10 (a) (b)  MOST (Kazuya Yamaguchi): Consulting firm promoting integral use of QFD-TRIZ-TM and AI (big data analysis).
   12 (a) (b)  Ideation Japan, Inc. (Teruyuki Kamimura):  Actively promoting Ideation-TRIZ, strong in IP field.
   14 (a) (g)  TRIZ Study (Shinsuke Kurosawa):  Posting many papers by G. Altshuller and other Russian authors in Japanese translation.
   16 (a) (b)  Pro-Engineers (Shigeru Kasuya):  An active consultant promoting TRIZ/USIT, posting many introductory articles.
   17 (a) (b)  IdeaPlant (Rikie Ishii):  Conducting workshops for enhancing idea generation; developed 'TRIZ Brainstorming Cards'.
   18 (a) (e)  Monodukuri.com (Osamu Kumasaka): Active portal site connecting Issues in monodukuri (60 issues) to Methods for solutions (118 methods) by getting support of many professionals.  This is a nice new business model, I think.

Catalogs like this in each country and at the global level should be very useful for many people who want to learn TRIZ and creative problem solving methods.  Learning the existence and activities of these many TRIZ-related sites, we TRIZ practitioners are much sitmulated: Let's work Together!, Connected!! for building up the world Catalog in World TRIZ Sites Project (WTSP)!!!


Photo: Toru, Mar. 31, 2018
at Kashiwanoha Park

Click the photo to enlarge


World TRIZ Sites Project (WTSP)


  WTSP Outputs:  Catalog of TRIZ-related Sites in Japan (in Japanese) (Toru Nakagawa)   (Mar. 17, 2018). 

In the Japanese page, a full manuscript for the Catalog of TRIZ-related Sites in Japan has been posted, as a preliminary part of the WTSP World Catalog.  It introduces over 90 sites, describing in 2 to 8 lines each.  It is remarkable that about 2/3 of the sites are new sites in these 10 years.  Almost all the sites are posted in Japanese only. 
In the present English page, I temporarily show 25 important sites in Japan, by simply listing the site name and its URL to the main page, without any further description.  Please give me time for preparing the English version.


Photo: Toru, Mar. 27, 2018
at Baden-Baden (Germany)

Click the photo to enlarge

TRIZ News: "The TRIZ Journal" has been re-launched already under the operation by Darrell Mann (Systematic Innovation, Inc.) (Jan. 30, 2018)

Thanks and Conglaturations!!!  Visit it with the URL: https://triz-journal.com/

WTSP Project: Starting the preparation of 'A Catalogue of TRIZ-related Sites in the World' (1) Findings through Practices in Japan (Toru Nakagawa) (Jan. 30,, 2018)  (2) For more practical ways of preparation (Toru Nakagawa) (Feb. 7; Feb. 11; Feb. 12, 2018)

For the actual start of preparing 'A Catalogue of TRIZ-related Sites in the World', I am now working to search and collect TRIZ-related Sites in Japan and to write brief introductions to them.   I now realize that we need to handle a huge volume of information, even exceeding my expectation.  Here are some findings and suggestions for our work.  [** Notice: Depending on countries there seem various differences in the options of search engines and in the situations of TRIZ-related sites.  Thus in each coutry, please adapt/modify your practical procedures to meet our common goal.]
For the search of TRIZ-related sites, we should better use Yahoo! instead of Google, with the keyword of 'TRIZ' and with the settings of 'Local area', 'Our own language', and the option of 'Display the link for searching inside the site'. Copy the full results of the search onto a document while keeping the hyperlinks active.

For each site shown in the search results, carry out the search inside the site; then we can get the search results of many TRIZ-relevant pages inside the site.  Visit each site actually to take a look at important pages and write a brief introduction to the site. (Description in the Guideline is revised as: 'Single line introduction' ==> 'Brief introduction' (in 2 to 4 lines, in a free format).
Because of much diversity among the sites, we are going to classify them according to their nature into 9 Categories, such as (a) TRIZ information sending sites, (b) Consultants etc. in TRIZ, (c) Academic societies, etc. (d) Universities, etc.   Depending on the nature of the site, quality and quantity of information, and importance, etc., we should introduce important sites closely to some detail, while less important ones just briefly.
There exist many important relevant sites without mentioning TRIZ explicitly. So we should carry out broader searching for them at the second stage.  How to search them and how to arrange them in our (second type of) Catalogue of TRIZ-related Sites are now under consideration by our 'Global Co-editor' Darrell Mann.
Project members are encouraged to start the search and description work in their own country in the manner describe above and in the Guidelines.

On the basis of the policy in (1), a more practical way of describing individual TRIZ sites and list of them has been shown by relaxing the Guidelines. MS Word instead of Excel may be used, and plain text formats may be easier to write than tabular formats.  A Word file  of the 'Selected 120 TRIZ Sites in the World' (composed by Nakagawa in 2008) is going to be used as the sample and base document for updating and enhancement.  Corresponding to this practical ways, the WTSP Guideline is revised partly. (Feb. 7, 2018)

The base document is posted openly in the WTSP platform (https://trizsites.bitrix24.com/~1AshD )   and in this Web site "TRIZ Home Page in Japan" .  File name is: WTSP-ListSites-Global-Stage0-180210.docx . See the Instructions in the File how to review and revise this Catalog of Sites.   Revised versions of the document will be publicized in the WTSP platform (probably every month or two) and also in this Web site (probalbly in a shorter interval).  (Feb. 11, 2018). 

Another important change in the Membership: WTSP members may or may not use the WTSP platform. Since many people are too busy to learn the Bitrix24 operations, they prefer to use their ordinary tools of MS Word and emails. See the page WTSP (A2) Organization . (Feb. 12, 2018) 


Snow at Kenrokuen Park (Kanazawa)
Photo by Toru, Feb. 5, 2018

Click to enlarge

  TRIZ News:  TRIZ News in Japan   (Jan. 25, 2018)

Japan Creativity Society (JCS) and Kindai University are going to hold International Conference on Creativity and Innovation (ICCI2018) on Sept. 10-12, 2018 in Osaka, Japan  (Jan. 25, 2018)

Japan TRIZ Society (JTS) is going to hold 14th TRIZ Symposium in Japan on Sept. 13 - 14, 2018 in Tokyo. (Jan. 25, 2018)

  TRIZ News:  TRIZ News Outside Japan   (Jan. 25, 2018)

ETRIA TRIZ Future Conference 2018 will be held on Oct. 29 - 31, 2018 at INSA Strasbourg, Strasbourg, France. (Jan. 25, 2018)

TRIZfest-2018 Conference and related events will be held on Sept. 13-15, 2018 in Lisbon, Portugal.   (Jan. 25, 2018)

ICSI 2018 is to be held on Jul. 18-21, 2018, in Hsinchu, Taiwan. (Jan. 25, 2018)

TRIZCON2018 will be held on May 6-9, 2018 at Purdue University, West Lafayette, IN, USA (Jan. 25, 2018)

 From the Editor:  Message for the New Year 2018 (Toru Nakagawa)  (Jan. 25, 2018)

Greetings from Japan for a Happy New Year 2018!! Wish the year be peaceful in the World, and healthy, happy, and successful for you all.  Posted is an English translation of my New Year Card which I sent to about 200 friends in Japan whom I met before my TRIZ days. 

Happy New Year 2018 !!
Since my retirement of OGU in 2012, I have been continuing my research and proliferation activities on the methodologies of creative problem solving. I am trying to extend application areas of the methodology from technolgies to social/human areas.
At the base of social problems related to poverty, we find the conflicts in arguments for self-responsivility and for mutual help. And further down at the root, I have found the 'Principal Contradiction of Human Culture', as show in the figure (right). The two Principal Principles 'Liberty' and 'Love' do conflict everywhere. 'Ethics' is supposed to motivate and coordinate the two Principles, but it should overcome the basic inclination of 'Obedience' in old 'Morals' and stand on the basis of dignity and essencial equality of every person. The three Principal Principles, i.e. Liberty, Love, and Ethics, should be establlished in every person and every organization/society. 
The swallows in the photo show naturally and sincerely 'Liberty, Love, and Ethics'.
I wish you all for your health and success, and for a peaceful new year.
January 1st, 2018   Toru Nakagawa

New Year Greeting Card (Toru Nakagawa)
Click to enlarge

Posted in 2017

WTSP Project: Index Page of World TRIZ Sites Project (WTSP) is Open for Up-to-date Basic Information and Activitiy News (Toru Nakagawa) (Dec. 27,, 2017)

Index Page of WTSP Project is open in this Web site for posting (A) basic WTSP information (keeping up-to-date) and (B) up-to-date announcements of activities, invitations, outputs, etc.  Following 7 pages are posted with detailed information in English.  We wish your support and collaboration, Together ! Connected !!

(A1) Policies ( Aims ,  Goals of Outputs , Documentation process , Organizing the Project Team )

(A2) Organization ( Invitation to Membership ,  Joining as a Member , Organizing a Team and Roles we need , Current organization and Members )

(A3) Platform (for working as voluntary members)  ( Outline of the Bitrix24 Groupware System   Our WTSP Platform in the Bitrix24 system  , Brief Introduction of using the Bitrix24 platform for documentation )

(A4) Guidelines (Guidelines of describing Sites and Lists of Sites , Handling the documents in 3 main stages (i.e., drafts, manuscripts under internal review, and output publicized openly) , Handling documents in countries,regions, and the world , Handling documents in English and also in various non-English languages , Structuring documents in a categorized system )

(A5) Accesses to the Project outputs by people outside the Project  ( Public Links to the Output Documents in the WTSP Platform ; Usage of the Outputs Documents )

(A6) Publicized outputs  ( Basic information of the WTSP Project , Output Documents of the WTSP Project   (to be annonced later) )

(B1) WTSP News 2017


Screen shot of WTSP Platform
in the process of handling documents  
Click the image to enlarge

  TRIZ Forum:  Letters from Readers (Nov. - Dec., 2017)/ Initializing 'World TRIZ Sites Project'   (Dec. 17, 2017)  Index page of "Letters from Readers"

[English page ]  Toru Nakagawa (Japan); Vladimir Petrov (Israel), Shireen Al - Jaouni (Jerusalem), Alexander Theodor Narbut (Ukraine), Mohammad Reza Nouroozi (Iran), Simon Dewulf (Australia), Tan Runhua (China), Oleg Kraev (for Yuri Salamatov) (Russia), Nina Defounga (Germany), Nikolay Shpakovsky (Russia), Valeri Souchkov (Netherlands), Darrell Mann (UK), Davide Russo (Italy), Tanasak Pheunghua (Thailand), Michael Orloff (Germany), Ian Mitchell (UK), Leszek Chybowski (Poland), Ellen Domb (USA), Kai Hiltmann (Germany), T.S. Yeoh (Malaysia), 蔡易坤 (for Prof. Lingling Luo) (China), Yury Danilovsky (Korea/Russia); Eyad Khalifeh (Canada/Israel)
This page ’Letters from Readers' is for recording various communications between readers in the world and the Editor. However, the present page covering Nov.- Dec. 2017 is very unique and devoted for the records of communications mostly issued by Toru Nakagawa for proposing 'World TRIZ Sites Project' and responses to them by many TRIZ Leaders in the world. The Proposals and Invitations of the Project are posted here on Dec. 9, 2017, as an ordinary document so to speak. In the present page, on the other hand, you can see why and how Nakagawa wanted and initiated the Project and how so many people in various countries responded positively to support and join the Project. Such a consensus of necessity of 'World TRIZ Sites Project' certainly becomes our motivation to 'Build a (big) page of TRIZ Sites in the World' and further for us, TRIZ community in the world, to work Together! Connected !! 

[Japanese page ] Toru Nakagawa; Yoshihiro Kosaka, Prof. Kozo Kuchitsu, Tsunehisa Maekawa, Hidetake Sakuma, Tomomi Murata
Prof. Kuchitsu encourages me.  He is Professor Emeritus of Univ. of Tokyo and is just retired officially at the age of 90 and still keeps academic/educational communications with people in Japan and in the world.  H. Sakuma regularly distributes his 'Human Factor Safety Reports' analyzing various accidents/failures.  He categorizes errors in 3 types, i.e., Random errors, Systematic errors, and Sporadic errors.  Education and training is useful against Random errors, and training of design procedures is necessary against Systematic errors; but neither of them cannot prevent Sporadic errors, which come out sub-consciously.  He says Human-Factor solutions have to be trained for preventing Sporadic errors.

Forum (From the Editor): World TRIZ Sites Project: Its Plan and Invitation: Volunteer Project for Connecting TRIZ Sites in the World (Toru Nakagawa) (Dec. 9,, 2017)

Receiving positive feedbacks by a number of TRIZ Leaders, I have sent an official Invitation to the 95 TRIZ Leaders for starting the World TRIZ Sites Project.  Please note, however, that the Project is open for any TRIZ Leaders/Colleagues who volunteer to work for the sake of TRIZ, Together ! Connected!!   The Invitation Letter summarizes the purpose and philosophy of the Project and describes how we are going to work together with the platform in Bitrix24 system in cloud.  Descriptions of individual sites and lists of them are to be made in a bottom-up manner, being structured according to countries, then regions, and finally the whole world, and also being refined through the processes of drafting, reviewing/revising, and publicizing.  The project team is going to be organized in a way to match with the documentation processes.

We eagerly wish you, Leaders and Colleagues in TRIZ (in a wider sense), to join our World TRIZ Sites Project as a voluntary member, or to support us (being outside the Project) by describing your own (or neighboring) TRIZ sites and contributing it to the Project.    The Invitation Letter writes concrete instructions about Membership Application Form, process of opening an account in the platform, templates and samples of site (and list of sites) description, a method for public accessing to our open documents in the platform.

Forum (From the Editor): World TRIZ Sites Project: Proposals: Volunteer Project for Connecting TRIZ Sites in the World (Toru Nakagawa) (Dec. 9,, 2017)

Since 3 weeks ago, I sent a series of emails to 95 TRIZ Leaders (of 33 Countries) in the world.  They are proposals of volunteer work together as 'World TRIZ Sites Project'.  It intends to build a page of listing and introducing TRIZ sites in the world, by the collaboration of TRIZ leaders/colleagues.  I built such a page in 2008, 'Extended 120 TRIZ Links in the World' , but could not update it for 10 years.  Since then I have been advocating a vision 'Global Network of Public Web Sites in TRIZ: A Proposal for Building A Global TRIZ Community' .  The present project will become a practical step forward to such a goal. Our Symbol Mark shows this motive clearly.  Here are the four documents of Proposal, which are made clearer step by step by receiving positive feedbacks:

    Proposal (1)   Please help to Build a page of 300 TRIZ Sites in the World  (Toru Nakagawa, Nov. 21, 2017)
    Proposal (1A)  Let’s Cooperate with the platform of TRIZSites.bitrix24.com (Toru Nakagawa, Nov. 22, 2017)
    Proposal (1B)  World TRIZ Sites Project: Guidelines of Describing TRIZ Sites and Their Lists (Toru Nakagawa, Nov. 27, 2017)
    Proposal (1C)  World TRIZ Sites Project: Organizing the Project Team (Toru Nakagawa, Nov. 28, 2017)


World TRIZ Sites Project
Symbol Mark
Click the image to enlarge


From the Editor: Failures in searching for pages of the present site have been recovered (Toru Nakagawa) (Nov. 16, 2017)

The present site "TRIZ Home Page in Japan" was found to have blocked the page searches by softbots (Google, Yafoo, etc.) since half a year ago due to some mishandling in our Web server; now this error has been corrected.  Internal search of pages was not working nearly 2 years due to unknown causes, but has been recovered today .  I deeply apologize for your  inconveniences for so long time, and beg your patience for some more months until recovering the hit ratio.  I also notice that many backlogs exist, e.g., updating global/domestic TRIZ site links (since 2008), and posting recent development of TRIZ-related software tools, etc.  I wish to have voluteers for supporting this site, and those for operating TRIZ Web sites in different countries/communities for forming 'Global Network of Public Web Sites in TRIZ' .

 Paper: TRIZ in China: TRIZ,The Development And Dissemination In Industries In China (Runhua Tan, China)   (Nov. 5, 2017)

Early October, two international TRIZ conferences were held at the same time; they are ETRIA TRIZ Future Conference (TFC2017) in Lappeenranta, Finland and Altshuller Institute for TRIZ Studies Annual Conference (TRIZCON2017) in Atlantic City, NJ, USA.  Among many presentations, I am much interested in the paper given by 'National Engineering Research Center for Technological Innovation Method and Tool, Hebei University of Technology (Tianjin, China)' at the both conferences.  On my request, Professor Tan sent me his TRIZCON paper and presentation slides.  Thanks to the Author's and Altshuller Institute's permissions, I am very happy to post this paper in "TRIZ Home Page in Japan" both in English and in Japanese translation.

Research and dissemination of TRIZ in China have been developed recently in a surprising speed and extent, we learn, in comparison to the former two reviews: by Zhao Xinjun (Northeastern Univ.) in Nov. 2004 and by Xian-yong Zhou (Southwest Jiantong Univ.) in Nov. 2011 .  According to Dr. Bai, the Research Center is led by Professor Runhua Tan, having about 80 faculty members, about 20 PhD students, and about 80 postgraduate students (corrected on Nov. 7, 2017), and is devoted to research, education, and dissemination of methodologies and tools for technological innovation with TRIZ at its core.  China seems to have many more research centers on innovation methods based on TRIZ, under strong supports by national and regional governments.

The Center has developed 'an integrated system of methodologies for innovation on the basis of TRIZ', in the name of C-TRIZ (Chinese version of extended TRIZ). This paper introduces its overview.
They have been actively disseminating C-TRIZ into industries by using MEOTM (Mass-Engineer Oriented Training Model).  The trainings last for half a year or full year (mostly using weekends) with lessons and real practices.  One or multiple companies are selected first, and then the participating engineers are selected for organizing a training class.  Every engineer has to bring in an 'inventive problem' related to his/her own job or company, and during the training course he/she has to define the problem clearly, solve the problem, and present the results at open oral defence in order to be certified as an 'innovative engineer'. From 2013 till 2016, the center carried out 40 training classes, covering 721 companies, with 3173 participating engineers in total, and produced 1471 certified engineers, they report.  

  TRIZ Forum:  Letters from Readers (Aug. - Oct., 2017)   (Nov. 5; Nov. 12, 2017)  Index page of "Letters from Readers"

[English page ]  Simon Dewulf (Australia), Valeri Souchkov (The Netherlands), Shireen Al - Jaouni (Jerusalem), Isak Bukhman (USA), Sung-Wook Kang (Korea), Toru Nakagawa; Added in English translation: Naohiko Takayama (Japan), Toru Nakagawa, Andrei Seryi (UK) (Nov. 12, 2017)

I received with thanks these short but warm and encouraging communications.  Mr. Kang handed me a message card in Finland appreciating my activities as a model for himself; I was very much surprised and feel honored.
On a request from Prof. A. Seryi, communications between N. Takayama and Nakagawa are posted in English translation. And a short note is inserted for introducing Prof. Eiichi Yamaguchi's work on Innovation diagram. (Nov. 12, 2017)

[Japanese page ] Tadasuke Mizutani, Yasumasa Ikezoe, Kou Haginoya, Akihiro Katahira, Katsushige Hino, Kouji Otani, Naohiko Takayama, Toru Nakagawa
From 4 people (Mizutani, Ikezoe, Haginoya, and Hino) I received comments and questions on my articles about 'Liberty vs. Love' contradiction and Ethics, and I replied them one by one for clarifying various points of discussions.  Katahira announces a new version of his Fuda-Yose tool for visualization, and Hino asks me a question about the TRIZ' view of AI.  Otani introduces me about the activities of 'Japan Society of Early Stage Dementia'.  Takayama discusses about idea generation in physics, in relation to A. Seryi's Keynote.   


Red leaves
(Helsinki, Finland)
Toru (Oct. 7, 2017)
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  On the 19th Anniversary of  "TRIZ Home Page in Japan":  (Editor Toru Nakagawa)   (Nov. 5, 2017)

This Web site "TRIZ Home in Japan" celebrates its 19th Anniversary on Nov. 1.  I am very grateful to you all, including authors, translators, and readers in Japan and around the world, for your continuing support.  This site serves as an open forum of information exchange for better understanding and usage of Creative Problem Solving Methodologies.  Initially, I intended to introduce TRIZ, a Russian-based methodology for mostly technological areas, but year after year the scope of this site became wider and deeper along with the development of such methodologies.  TRIZ itself has evolved to wider application including business and marketing, and has been spreading widely in the world.  My own research has extended to USIT as an easy-to-learn TRIZ, the Six-Box Scheme as a new paradigm of creative problem solving, and CrePS (General Methodology of Creative Problem Solving) which intends to integrate and unify various methods by using the Six-Box Scheme.  Since 2015, I have been trying to apply them to social problems, especially for revealing the fundamental contradictions in Human Culture and investigating the relationships of Liberty-Love-Ethics.  Thus the scope and contents of this site have been slightly changing as a result of natural evolution.

This site is meant to openly publish information and communications on a not-for-profit basis.  Though I have been operating this site as a volunteer, this site is not a personal site but a public forum to be composed of the contributions by readers, as you see already.  Most pages are published in Japanese and in English in parallel for the purpose of mutual understanding and collaboration between Japanese and overseas people.  I envisage that Pubic Web Sites built in different countries/communities will form A Global (TRIZ) Community with much reduced language barriers Four Entrance Pages have been installed in 2012 for your easy access to articles.  The number of visits since November 2005 is (on Nov. 5) 233,673 (increasing by about 3,400 for the last 1 year) to the top page in Japanese and 41,640 (increasing by about 1,200) to that in English.  I wish this Home Page be useful for you readers to solve your various problems.  Readers' contributions either in English or in Japanese are heartily welcome.


 Keynote: TRIZ for Science: Evolution of Scientific Instruments & Methodology of Inventiveness in Applications to Science (Andrei A. Seryi, UK)   (Oct. 17, 2017)

This impressive Keynote Lecture was given by Professor Andrei Seryi at ETRIA TFC2017 held two weeks ago in Lappeenranta, Finland.  Under his kind permission, I am posting his presentation slides (110 pages in PDF ) here in HTML with (new) section headers and GIF images for easier overall understanding. 
(Note: ETRIA is working for publishing the TFC2017 papers in a book/journal from some publisher, thus stopping the authors to post their papers/slides at any Web site.  Keynote lectures, however, are not included in the publication plan and hence are allowed for posting at a Web site by the author's decision.)

Professor Andrei Seryi  graduated Novosibirsk State University (NSU) Physics Department in 1986 and worked in Russia, France, USA (Fermi lab and Stanford Linear Accelerator Center (1999-2010)) in the fields of high-energy physics, and since 2010 he is Director of John Adams Institute for Accelerator Science , the University of Oxford, in UK.  As a Director he has become to consider more seriously about the usefulness of high-energy physics and to teach creativity methods in scientific research.  So he met TRIZ again (since his childhood) and found its depth.

The present Keynote contains detailed figures of scientific instruments for cutting-edge physics, and you may feel difficult to understand the background physics, so do I.  However, the author shows the essential points of discussion clearly and plainly for people having interest in science in general.  E.g., be careful (and needs methodology) in the prediction of future, evaluate different research directions not only for fundamental knowledge but also for usefulness and the costs.
Author's insights of using TRIZ are deep.  In explaining Inventive Principle 35 'Parameter change', he demonstrates (in place of simple parameters volume V and surface area S) the ratio V/S inspires us much more while changing the parameter value.  He also mentions that Cloud chamber and Bubble chamber, both for detecting high-energy particles, are an example of TRIZ concept of 'System and Anti-system' and that if scientists were familiar with the concept, Bubble chamber could have been invented much earlier. 'Transition to super-system' is also an important TRIZ concept in understanding the evolution of systems.  New methods/tools are implemented as a system by assembling many components, and then they become useful only when working as a part of larger systems (i.e., super-system) for social, business, technical, etc. purposes. 

"TRIZ can be very useful for science, as an inspiration, as a very efficient toolbox, as a way to connect different disciplines, as a new way to see the world" -- This is the conclusion by Professor Seryi.  It is a testimonial by a leading scientist who has achieved a lot in physics and mastered TRIZ.   We wish TRIZ be understood widely and used in practice in the field of science, by many researchers and engineers.
--- TRIZ can support science well in the aspect 'scientific revolutions are tool-driven', as shown in this keynote.  TRIZ can support science also in the aspect 'scientific revolutions are concept-driven'? -- This is an open question.  Please refer a discussion page .


Yellow leaves
(Lappeenranta, Finland)
Toru (Oct. 4, 2017)
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 TRIZ/CrePS Paper (Social problem): 'Liberty vs. Love': The Principal Contradiction of Human Culture (2) The 'Liberty vs. Love' Contradiction and 'Ethics' at the Personal Level (Toru Nakagawa)   (Sept. 28, 2017)

Recently I made presentations at three conferences, i.e., Japan Creativity Soc. Conf. (Sept. 9-10, 2017 in Yokohama), Japan TRIZ Symp. 2017 (Sept. 21-22, 2017 in Tokyo), and ETRIA TRIZ Future Conf. TFC 2017 in Finland.  The presentations have the same title and similar contents, but are adjusted to their different audiences, different requests of documents and submission dates.  I have been working on this social issue for these 2 years.  You may trace my study in the articles posted in this Web site, e.g. (Nov. 2015), (Mar. 2016), (Apr. 2016), (Nov. 2016), (Jan. 2017). 

The Basic Hypothesis obtained in this study can be summarized as follows (Toru Nakagawa, Sept. 26, 2017):
(1) Ethics (and its deepening) is the 0th Principle of Human Culture. Deep inside the human heart, Ethics serves as the guideline to direct internal desires from Bad Will toward Good Will. The Contents of Ethics, i.e. 'What is Good, and What is Bad', are acquired later in life through the society, and hence are different depending on history and on society. However, 'the internal ability to distinguish Good from Bad deep inside the human heart', which I call Conscience, is supposed to be intrinsic for humankind and hence serves as the fundamental basis for the Human Culture. The concepts of 'Essential Equality of every person as a human' and 'Fundamental Human Rights' have become clearer through the Human history.  Essence of the 0th Principle is the principle that Every person has the rights for pursuing Happiness.
(2) The First Principle, Liberty, is 'To decide and act for oneself and to live', and it aims at Winning in Competitions. It brings with Reformation and Creation on one side, while Ruling and Conservation by the Winners on the other side. Essence of the First Principle is 'To pursue My (or Our) own Happiness and Interests'.
(3) The Second Principle, Love, is 'To love one's own children, family, and neighbors and to help and protect them', and aims at self-controlling one's Liberty and at serving and coordinating with others.  For protecting one's Family (in a wider sense), Love is apt to generate conflicts with the Outsiders.  Essence of the Second Principle is 'To pursue the Happiness and Interests of All the members'.  Here, the range of people expressed as 'All the members' is an issue, which should be widened universally as a goal of Human Culture.
(4)   There exist various Conflicts/Contradictions inside Liberty, inside Love, and between Liberty and Love. Types of such Contradictions are listed.
(5)  When the understanding of Ethics is poor, i.e., when one is motivated by Bad Will (or selfish mind), Liberty as well as Love are greatly spoiled in their spirits and actions and the 'Liberty vs Love' Contradictions emerge severely.  Therefore, the installation of Ethics in the minds and actions at the personal level and in the actions and social rules at various social organizational levels is the important keys to reduce and resolve the Principal 'Liberty vs. Love' Contradiction of Human Culture. The core of the Ethics is the spirit of 'Essential Equality of every person as a human'.
(6)  In short, Liberty (for pursuing My (or Our) own Happiness) and Love (for pursuing Happiness of All the members) are both motivated and hence can be coordinated by the Ethics (i.e., the 0th Principle that Every person has the rights to pursue one's Happiness) so as to reduce/resolve the Principal Contradiction 'Liberty vs. Love' of Human Culture.


Principal Contradiction of Human Culture (Skeletal structure)
Toru Nakagawa(Sept. 21, 2017)
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Principal Contradiction of Human Culture (Detailed structure)
Toru Nakagawa(Sept. 21, 2017)
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 Editorial:  'New Information' posted in 2014 has been moved to the archive file  (Sept. 28, 2017)

  Forum: Photo Album:  Baby Swallows at My Home (Photo and Edit: Toru Nakagawa)  (Jul. 18, 2017) (Jul. 18, 2017) 

Under the eaves of my home at Kashiwa, located about 25 km north-east of Tokyo city center, a pair of swallows came back to the old nest after an interval of about 20 years and raised 4 youngsters.   Birth on Jun. 9, growing quickly in 15 days, and left the nest on Jun. 24.  I took their photos every day.  An album of 22 photos are posted both in PDF and in HTML.  You may click the small images to see the enlarged photos.  In this top page, 4 selected photos are shown. 

4th day:  Parents happen to come to feed one after another.

10th day: A dragonfly is a big treat

14th day:  Baby mouths and a youngster face

15th day:  Parents' demo flights on the day before of leaving the nest

  TRIZ Forum:  Letters from Readers (May - Jul. 2017) (Jul. 18, 2017) (Jul. 18, 2017)  Index page of "Letters from Readers"

[English page ]  Yuri Borgianni (Italy), Michael Orloff (Germany), Monika Woźniak (Poland), Simon Dewulf (Australia)
In relation to my introductions of ETRIA TFC2016 individual papers (Categories A through G ), I received a number of communications.  Especially M. Woźniak   expalins her thoughts on IT project management and TRIZ, as a discussion to my introduction (G2 ).  She contributed 2 photos of an interesting flower she saw in Croatia.  M. Orloff introduces his method 'Meta-Algorithm of Invention (MAI T-R-I-Z)' for TRIZ education.

[Japanese page ] Tsunehisa Maekawa, Tadasuke Mizutani, Mikio Fukumura, Toru Nakagawa
Maekawa writes his experience of talking with elementary school teachers how to explain children to be creative.  Mizutani, an expert of the KJ method, writes his impression about this Web site.  Fukumura asks me about TRIZ activities in Taiwan, and I reply him briefly.  

  Conference Report (31)-Papers G: Personal Report of ETRIA TFC 2016: Introductions of Individual Papers: G.  Applications to Soft & Non-technical Areas  (7 Papers) (Toru Nakagawa)  (Jun. 21; Jul. 18, 2017)  

Introductions of the papers presented at TFC2016 are written by Nakagawa in English.  Here are 7 papers in the 7th category. (G1-G2: posted on Jun. 21; G3-G7 on Jul. 18, 2017).  This finishes the introduction of all the TFC2016 papers. 
The small button guides you to each Introduction. marks are highly recommended.

G1. Opportunities for integrating TRIZ and systematic innovation tools into large scale Agile software development Teemu Toivonen (Finland)  
G2.  TRIZ potential for IT projects: Monika Woźniak (Poland)

G3.  Developing Growth Portfolio with TRIZ Structures: Michael Ohler, Philip Samuel, et al. (Germany & USA)  
G4.  Structured activation of vertex entropy (SAVE): another way around creative problem solving for non-technical applications : Stelian Brad (Romania)
G5.  TRIZ to support creation of innovative shared value business initiatives: Stelian Brad (Romania)
G6.  Conceptual framework for marketing communication management with a qualitative and system-oriented approach: Joanna Kijewska, Marek Goliński (Poland)
G7.  TRIZ/CrePS approach to the social problems of poverty: 'Liberty vs. Love’ is found the Principal Contradiction of the Human Culture: Toru Nakagawa (Japan)  


Iris (at Kita-Ayase, Tokyo)
Photo by Toru Nakagawa,
on Jun. 4, 2017
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  Conference Report (31)-Papers F: Personal Report of ETRIA TFC 2016: Introductions of Individual Papers: F. Patent Studies  (1 Paper) (Toru Nakagawa)  (Jun. 21, 2017)  

F1. Enhancing Patent Portfolio Using TRIZ Workshops: Frank Zeihsel, Christian M. Thurnes, Jan Schulze (Germany) 

  Conference Report (31)-Papers E: Personal Report of ETRIA TFC 2016: Introductions of Individual Papers: E. Usage of TRIZ in Education and in Academia (5 Papers) (Toru Nakagawa)  (Jun. 4, 2017)  

Introductions of the papers presented at TFC2016 are written by Nakagawa in English.  Here are 5 papers in the 4th category. The small button guides you to each Introduction. marks are highly recommended.

E1.  A Brief Theory of Inventive Problem Solving (BTIPS) - an Approach in Teaching, Learning and Practice: Zbigniew Marian Bzymek (USA)
E2.  Aspects of teaching TRIZ: Christoph Dobrusskin (The Netherlands)
E3.  Product development using heuristic-systematic approach: a case study: Bartosz Pryda, Marek Mysior (Poland)
E4.   Development of creative education materials for students at middle and high school using design thinking process with simplified TRIZ: Kyeongwon LEE (South Korea)
E5.   Idea Generation with Substance-Field Analysis: the Influence of Prior Knowledge and Practical Experience: Iouri Belski, Anne Skiadopoulos, Guillermo Aranda-Mena ( Australia), Gaetano Cascini, Davide Russo (Italy)


Nemophila (at Nasu Flower World)
Photo by Toru Nakagawa,
on May 30, 2017
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   Conference Report (31)-Papers D: Personal Report of ETRIA TFC 2016: Introductions of Individual Papers: D. Promotion of TRIZ in Industries (5 Papers) (Toru Nakagawa)   (Jun. 4, 2017)  

Introductions of the papers presented at TFC2016 are written by Nakagawa in English.  Here are 5 papers in the 4th category. The small button guides you to each Introduction. marks are highly recommended.

D1.   A long-term strategy to spread TRIZ in SMEs. Analysis of Bergamo’s experience: Davide Russo, Daniele Regazzoni, Caterina Rizzi (Italy)
D2.   Combining TRIZ and open innovation, a new promising perspective for enhancing corporate innovation processes: Masih Hanifi, Remy Houssin, Denis Cavallucci, Simon Fuhlhaber (France)
D3.   R&D in Poland – is the country close to a knowledge-driven economy?: Dorota Chybowska, Leszek Chybowski (Poland)
D4.   Is Poland an innovative country?: Dorota Chybowska, Leszek Marek Chybowski (Poland)
D5.   Why TRIZ Popularity is Declining: Sergey Sobolev, Oleg Abramov (Russia) 


Roses (at Reitaku Univ.)
Photo by Toru Nakagawa,
on May 11, 2017
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   Conference Report (31)-Papers C: Personal Report of ETRIA TFC 2016: Introductions of Individual Papers: C. Case Studies in Industries (9 Papers) (Toru Nakagawa)  (Apr. 24, 2017)  

Introductions of the papers presented at TFC2016 are written by Nakagawa in English.  Here are 9 papers in the 3rd category. The small button guides you to each Introduction. marks are highly recommended.

C1. Heuristic problems in automation and control design: what can be learnt from TRIZ?: Leonid Chechurin (Finland), Viktor Berdonosov (Russia), et al.
C2. Optimizing motor performance by using TRIZ methodology: Matej Hohnjec et al. (Slovenia)  
C3. A proposal for automation of conceptual design stage in Architecture-Engineering-Construction (AEC) projects: Ivan A. Renev (Finland)
C4. TRIZ and innovation of pressing process: Bohuslav Busov et al. (Czech Republic)  
C5. TRIZ and turbojet engine innovation: Bohuslav Busov, Zdeněk Katolický et al. (Czech Republic)
C6. Mobile biogas station design – the TRIZ approach: Mariusz Ptak et al. (Poland)
C7. Design for change: disaggregation of functions in system architecture by TRIZ-based design: Sebastian Koziolek (Poland)
C8. TRIZ based problem solving of tile manufacturing system: Sebastian Koziolek, Mateusz Słupiński (Poland)
C9. TRIZ-based analysis of the rail industry problem of low adhesion: John Cooke (UK) 

  TRIZ Forum:  Letters from Readers (Feb. - Apr. 2017)   (Apr. 24, 2017) (Apr. 24, 2017)  Index page of "Letters from Readers"

[English page ]  Tomasz Arciszewski (USA), Czeslaw Cempel (Poland), Simon Litvin (USA), Pavel Livotov (ETRIA President), Oliver Mayer (Germany), Michal Halas (Poland), William Hess (USA), Shahid Saleem Arshard (Australia); Toru Nakagawa (OGU)
On request from S. Litvin, I wrote a document of my whole activities related to TRIZ and Creative Problem Solving Methodology at OGU, containing research, education, application, and proliferation (See a separate page: ). 
For writing Introductions of ETRIA TFC2016 papers, I sent a request to many TFC2016 authors for sending me their presentation slides.  And I received a message from ETRIA President to note the copyrights issues of the papers.  I confirmed that Papers in English are not posted/cited because ETRIA is going to publish them officially in spring NEXT year and that Slides in English may be posted/cited under Author's permissions and Papers and Slides in Japanese translation are allowed to be posted/cited.  I explained these points to the Authors and posted my Introductions of 17 TFC2016 papers on Mar. 30 under their permissions.
W. Hessler suggested me to make my Web site design easier to read and more user-friendly, especially for beginners.  I want to make this Web site, however, up-to-date, reliable, and high-quality source of information of TRIZ and Creative problem solving methodology in general.  For making such an intention compatible with user-friendliness, I have been trying to implement various measures; they are summarized here again in reply.  Probably it will be most effective from now on to insert more photos (such as people in conferences, authors of articles, flowers in seasons, etc.).  I would like to ask you, the readers, to contribute articles and give suggestions to this Web site. 

[English page (added on Jun. 4, 2017) Min-Gyu Lee (Korea & Finland), Giuseppe Carignani (Italy), Toru Nakagawa (OGU)
MG. Lee communicated with me on my Introduction to his ETRIA TFC 2016 paper; it's a pleasure for me that the Author appreciates my Introduction article.  G. Carignani is going to have a chance to talk on TRIZ to high school teachers and asks me for some references.  I suggested the Entrace papge for Children and High school students  of this site. 


at Monastery of Lorch (Germany)
Photo by Toru Nakagawa,
on Apr. 7, 2017
Click the image to enlarge

[Japanese page ] Mr. O; Akihiro Katahira; Toru Nakagawa (OGU)
Mr. O, who is going to introduce TRIZ in his company, asked me about the position of TRIZ among various idea generation methods.  I replied that methods of creative problem solving are more important than simple, short-cut oriented idea-generation methods.  Such methodology has been developed recently by improving/generalizing TRIZ.  The concept of 'Six-Box Scheme' and easy process USIT should be learnt, by using USIT Manual and USIT Case Studies. I just introduced the essence of what are discussed repeatedly in this Web site.

  TRIZ Forum: Information Letter:  TRIZ Activities at OGU: Research, Education, Application, and Proliferation (Toru Nakagawa) (Apr. 24, 2017)

I wrote this Information Letter for reporting my whole activities related to TRIZ and Creative Problem Solving Methodology at OGU, with the emphasis that research, education, application, and proliferation of TRIZ and related methodology are done in a parallel and cooperative manner.  My whole activities for these 20 years since 1997 are described in a chronological manner, in three A4 pages


General Index: Outline    [Categorized table of all articles (in English/Japanese) accessible with a single click.] 
                                                          [Kept always up to date.  (Checked and improved on Jan. 9, 2013)]

General Index page Categories (table color, link to general index outline)

(A) Parent page and Editorial

Parent page   ; Editorial    ; Entrance pages   ;  New Information    ;  Introduction to TRIZ  

(B) References

TRIZ References    ;  TRIZ Links ;  TRIZ News and Activities   ;  TRIZ Software Tools  

(C) Papers

Papers   ;  Case Studies   ;  Presentations, Research reports, Technical reports, etc.  ; Introductory articles and review articles
TRIZ Classics  ;  Course Materials and Textbooks  ;  Lecture Notes  ;  Lecture Notes on Related Topics ;    Articles in Related Areas

Documents of the CrePS Methodology  ;  USIT Process

(D) Forum

Conference & Seminar Reports   ;  Book Reviews and Introduction to References   ;  Communications, Discussions, Questions, Opinions, Comments, etc.    ;  Collabo: Collaboration Pages with TRIZ Promoters
Home Pages by Students


General Index  (A) Editorial (B) References Links News & activities Software tools (C) Papers, case studies, articles, Lectures, course materials   (D) Forum General Index 
Home Page New Information for children and highschool students for students and the general public for engineers (introduction) for Practitioners CrePS System Documents USIT Manual & Case Studies WTSP (World TRIZ Sites Project) Search in this site Home Page

  Questions, comments, submissions, etc. on this home page are welcome via e-mail to:
    Toru Nakagawa,  Dr.,  Professor Emeritus, Osaka Gakuin University
    E-mail: nakagawa@ogu.ac.jp [The same as before retirement.   Email is the main communication channel.]
    3-1-13 Eirakudai, Kashiwa, Chiba 277-0086, Japan.    Phone & FAX:  +81-4-7167-7403