Let's enjoy 'Think & Try' !
(for Children and Highschool students)
Editor: Toru Nakagawa
Last updated: Apr. 12, 2015

For solving problems creatively
(for Students and the General public)
Editor: Toru Nakagawa
Last updated: Apr. 12, 2015

Methods of creative problem solving
(for Engineers and Researchers novice to TRIZ)
Editor: Toru Nakagawa
Last updated: Apr. 25, 2015

Practices and methodologies of Creative problem solving
(for Practitioners and Experts)
Editor: Toru Nakagawa
Last updated: Apr. 25, 2015

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:  May 25, 2015 
Editor:  Toru Nakagawa 
(Professor Emeritus, Osaka Gakuin Univ.)
Last Updated:
  April 25, 2015

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. 

New Information (for the latest 6 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 divise 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
(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

Publications: "TRIZ Practices and Benefits" Series

Search in this site Home Page


New Information    [Articles posted/updated within these 6 months.  marks within these 3 months.]

  CrePS/TRIZ/USIT Documents:   USIT Manual and USIT Case Studies (Toru Nakagawa (OGU))  (May 25, 2015)

USIT ('Unified Structured Inventive Thinking') was originally developed by Dr. Ed Sickafus (1995) as a concise and consistent problem solving process and has been extended further in Japan by integrating and unifying various TRIZ methods into USIT.  By recognizing the Six-Box Scheme (of USIT) as a new paradigm of creative problem solving, USIT is now established as a concise overall process for the real practice of the General Methodology of Creative Problem Solving (CrePS), which can include/unify TRIZ, USIT, and many other creative problem solving methods. 
Manual of the USIT process has been described in the form of 31 slides along its steps.  And over 10 examples of creative problem solving (originally using USIT, TRIZ, and some other methods) have been described according to the USIT Manual, and form a Collection of USIT Case Studies .  A new page of the USIT Process contains the indexes of USIT Manual, USIT Operators , USIT Case Studies, and USIT References .  All these new pages are posted in Japanese (May 25, 2015); their English pages are under the way.

 TRIZ Forum: Letters from Readers (Jan. - Apr. 2015) (Apr. 25, 2015)  Index page of "Letters from Readers"

English pageEllen Domb (USA), Iuri Belski (Australia), Ramu Iyer (USA), Jim Harrington (USA), Ron Fulbright (USA), Alla Zusman (USA), Stephen Dourson (USA), James Kowalick (USA), George Draghici (Romania), Ravi Phani (India), Nicoletta Locatelli ( ), Helena Navas (Portugal), Shahid Saleem Arshad (Australia), Soo Ben Khoh (Korea), Bui Van Tao (Vietnam), Zawiah Abdul Majid (Malaysia), Toru Nakagawa (OGU)
(a) E. Domb lists up a large number of TRIZ organizations of national/regional/international levels.  (b) I. Belski sent inquiries to over 20 TRIZ people in the world concerning the experiences of TRIZ-related education in universities.  I responded to send several references of my experiences posted in this Web site.  (c) J. Harrington asked over-20 AI members for some real data showing the impact of TRIZ.  A. Zusman among others responded.  I recommended K.J. Uhrner's paper presented at ETIA TFC 2005.  (d) J. Kowalick was interested in the earthquake prediction research especially using Mahalanobis-Taguchi System.  (e) The photoes of Cherry Blossom have attracted a number of Spring Greetings.

Japanese pageOsamu Saito (Keihin), Tsunetake Maekawa (Japan QC Association), Kazuya Yamaguchi (MOST), Yuko Hirayama (Japan VE Association), Bui Van Tao (Vietnam), Toru Nakagawa (OGU)
(f) O. Saito, a beginner of learning USIT, asked questions on two illustrates of 'Picture Hanging Kit Problem.  I answered him that his comments are right in part and we should be very careful in drawing the problem/solution situations.  (g) K. Yamaguchi is interested in the earthquake prediction research and mentions the possibility of analyzing 10,000 aspects of information simultaneously by using Maharanobis-Taguchi method. 

 Editorial:  'New Information' posted in 2012 is moved to the archive file  (Apr. 25, 2015)

 Publication Announcement:  "TRIZ Practices and Benefits" Book Series are now available at Amazon.co.jp Market Place, only for domestic delivery  (Apr. 25, 2015)

Book series published by the CrePS Institute (Toru Nakagawa) are now purchasable at the Market Place of Amazon.co.jp.   The printed editions of volumes (1A), (2A), (3), and (4) are available for the standard price plus 259 yen for delivery (as fixed by the policy of Amazon). No shipping out of Japan. Books and their DL editions are available at the DLmarket site as before.

  TRIZ Paper: Fundamental Theory:  A Note on a Method and Granularity in the Structure of the World (Toshio Takahara)  (Apr. 12, 2015)

An 8-page paper presented at FIT2013 on Sept. 4, 2013.  Mr. Takahara's life-work theme is "To understand the world in a consistent manner, to realize the real basis of our human ways of living, and to establish a general and logical methodology for such a study."  As the basis of his logic, he builds the concepts of 'existing things' and their relationships, and also the ways of describing the whole world, which contains technologies, institutions, and persons.  For such a description, he finds the necessity of 'radical enumerative thinking' (i.e., a clearer extension of 'systematic thinking') and expressions of contradictions (i.e., a clear extension of 'problems'). He also extends the logics of dialectics in a much wider meaning.  Then he considers the basis of person's recognitions and actions and derives how the person decides them, with a range of consideration (i.e. granularity) and with a logic for solution (i.e., a thinking method). He discusses further basis of the person, i.e., the person's attitudes.  The width and depth, and clarity, of the author's consideration is indeed astonishing. 
In Japanese, a full paper and slides . In English, Introduction by Nakagawa .  I am encouraging the author to translate this paper into English.


Photo by Toru,
Mar. 31, 2015, Tokyo
Click to Enlarge

 TRIZ/USIT/CrePS Talk:  Methodology of Creative Problem Solving: TRIZ and Its Extension ~ Scientific Methods for Innovation ~ (Toru Nakagawa)  (Apr. 12, 2015)

The 57 slides were given in a lecture for 90 minutes at Graduate School of Medical Science, Tottori University, on Jan. 20, 2015.   I first describe that the basic Four-Box Scheme of Abstraction which is generally assumed in the current science and technology has a limitation and that many conventional 'Creativity methods' address with different partial aspects without having a sound overall view.  As new scientific approaches to inventive thinking, I explain TRIZ first and then USIT.  On the basis of them, the Six-Box Scheme was newly formulated as the paradigm for 'General Methodology of Creative Problem Solving' (CrePS).  These four stages of development of the methodology of creative problem solving reflect my own understanding for these 18 years.  Slides in Japanese  and also in English translation  .


Photo by Toru,
Mar. 31, 2015, Tokyo
Click to Enlarge

 TRIZ/USIT/CrePS Talk:  General Method of Creative Problem Solving: 'Six-Box Scheme' (Toru Nakagawa)  (Jan. 8; Apr. 12, 2015)

A talk presented to a dozen of highschool students at Yokohama Science Frontier High School (YSFH). Using 20 slides I gave a talk with many small excercises on Creative Problem Solving Methods for just 60 minutes.  I tried to give a general view of how to think and solve problems creatively, by the demonstration and excercises on my favorite case study 'How to make a knot with short string at the end of sewing'.  Full slides in Japanese .  -- Give me a few more days for English translation. ==> Slides are posted in English translation . (Apr. 12, 2015)

 TRIZ Forum:  Links to Papers Are Added in Nakagawa's Personal Report of Japan TRIZ Symposium 2014 (Toru Nakagawa) (Mar. 27, 2015)

Japan TRIZ Society has publicly posted PDF files of all the presentations given at Japan TRIZ Symposium 2014 in its official Web on Nov. 19, 2014 and on Jan. 14.  And selected 9 presentations have been posted in this Web site.  In my Personal Report (posted on Nov. 27, 2014), I have added the links to all these PDF files in the JTS site and the HTML pages in this Web site.


Photo by Toru,
Mar. 29, 2015, Tokyo
Click to Enlarge

 TRIZ Paper: Social application:  Methods and Examples of Applying the Business Management Related Evolution Trend Proposed by Darrell L. Mann – Translating the Evolution Trends from the World of TRIZ into the Daily Business and Management – (Hisataka Izawa, Ikuo Yoshizawa, et al.(Business and Management TRIZ Research Subcommittee, JTS))  (Mar. 27, 2015)

Presented at Japan TRIZ Symposium 2014.  The 6-membered B&M Study Group reported last year how to generate 'hit products/services' and found the tool of 'Trends of evolution (TE)' effective.  So they tried to make it more useful:
(1) They have made a booklet in Japanese for introducing the Trends of evolution in Darrell Mann's book ("HOSI for B&M").
(2) They have clarified the relationships of TE with several other methods often used in the B&M fields: they include: Nonaka's SECI model, 4 viewpoints in the Balance-score cards, and SWOT.
(3) They made a case study of applying TE: To transfer the technologies of some abandoned business for starting a new business model of servicing the technologies. They have found the examination of 3C (i.e. Customers, Company, Competitors) with respect to the 32 TE very useful.
In Japanese, the full descriptions of the extended abstract and the presentation slides are shown in HTML .  In English, the presentation slides in PDF is accessible through a link to the JTS site (English translation by JTS).

 TRIZ Paper: Social application:  Proposal of an Easy Value Evaluation Method by Means of TRIZ - Taking the Proposal for a New Life Style of the Elderly People as an Example - (Part 1) (Kimihiko Hasegawa, et al. (IP Creation Research Subcommittee, JTS)), (Mar. 27, 2015)

Presented at Japan TRIZ Symposium 2014. After having completied a multiple-year project, the 8-membered IP Creation Study Group discussed freely about what they should work on next and decided to work on this topic. They decided 'The aged and their relevant people live a happy life' as the top purpose (or vision) and 'The aged people solve the problems of their own and others' as the target (or goal).   In more concrete words, they recognize the problem 'The researchers and engineers around their retirement age want to live a life with some good motivation', and wish to have solutions towards 'For achieving their own visions, the aged people solve their own problems as well as others' problems'.  -- This is an important topic for many aged engineers, including many TRIZ practitioners, and for the whole society in Japan. 
In Japanese, the extended abstract and the presentation slides are shown in HTML .  In English, the presenation slides in PDF is accessible via at the JTS site (English translation by JTS).

 TRIZ Paper: Industrial application:  One Method for Expanding TRIZ Application -- Applying TRIZ to Products that TRIZ can Hardly be Applied to -- (Yoshiharu Isaka (IDEA))  (Mar. 27, 2015)

Presented last September at Japan TRIZ Symposium 2014.  In the areas of 'Utility engines' for example, some standard products have been delivered for decades without much change, because of no change in the requirements for basic usage as the power supply in the working machines for agriculture, forestry, etc. Isn't there any room for applying TRIZ?  The key is to find the 'sales points' which can convince the target users, i.e., the person in charge of selecting the engine in the working machine manufacturer. Thus one should think of various functions and features as the 'sales points' by using some idea generation methods. This is the 'Theme definition' stage in the problem solving process.  Then TRIZ will help to generate some methods for realizing the functions/features. -- This is an unfancy but important proposition.
Presentation slides are posted in HTML in Japanese ; those in English can be referred via a link to the Japan TRIZ Society site (English translation by JTS).

 TRIZ Paper: Industrial application:  How to Lead Beginners to TRIZ at the Place of Practices (Shigeru Hisanaga (DENSO))  (Mar. 27, 2015)

Presented last September at Japan TRIZ Symposium(see my Personal Report ) and obtained the 'Best presentation for me' Award as a result of participants voting. 
DENSO introduced TRIZ since 10 years ago (See ). The in-house TRIZ promoters have guided the projects of applicants, composed mostly by TRIZ-novices.   A key to success is realized to adopt the approach and tools which fit well with the needs and intentions of such TRIZ beginners. The author reviewed their 250 projects and characterized them with 3 types of needs (i.e., Want many ideas, Want a good solution, and Want to reconsider from the root) and with 2 types of intentions (i.e., Out of vs. Within the present constraints).   For each category of 3x2, the authors examined the TRIZ tools applied, and have summarized the TRIZ tools recommendable in each of the 3x2 categories of beginners' needs and intentions. -- This is a nice presentation with deep insights.  The author makes a concluding remark saying: "The success of TRIZ practice depends not only on the technical results but also on the participants' satisfaction. And hence, coaching is more effective than consulting."
Presentation slides are posted in HTML and in PDF , where English translation was recently brushed up by Nakagawa.

 Editorial:  An Advice for Searching Pages in This Web Site (Toru Nakagawa) (Mar. 27, 2015)

Try to use the following alternative retrieval methods depending on what sort of pages you want:
(a) Top Page (for New Information (with introductions) within 6 months),
(b) Four Entrance Pages (for Children, for Students, for Engineers, and for Practitioners), [Table of Contents is added in each of these Entrance Pages. (Mar. 27, 2015)]
(c) Categorized General Index Pages (Editorial, References, Papers, Forum),
(d) New Information accumulated (for all the pages listed in the chronological order since 1998)
(e) Any relevant pages (use the links in the texts and in the link tables), and
(f) Site Search with Keywords (the present page, by using any keywords). [In the Table of Links at the bottom of every page in this Web site, a pale brown cell is now added for the link to the Site Search page (Mar. 27, 2015).]


Photo by Toru,
Mar. 29, 2015, Tokyo
Click to Enlarge

 Forum: Earthquake Prediction Research:  Up-to-Date Report on the Early Detection of Omens of Anomalies in Monitoring Power Plant Equipment (Anomalous phenomena detected just before earthquakes) (Takumi Yoshioka (Mado-Planning), Hiroaki Kawai (Hokkaido Inst. of Tech.)) (Mar. 7; Mar. 9, 2015)

Presented at a symposium of Japan Society of Mechanical Engineers (JSME) in Jun. 2010. The authors developed a software system for monitoring the operation of electric power generators in thermal and nuclear power plants.  In such data, they have found effects of earthquakes vividly.  The data monitored every minute show the effect of instantaneous jumping of the generator due to the S-wave of an earthquake, and after the quake the data show unstable increase of wattless currents due to some off-alignment of the generator axes.   In addition, since 30 minutes before the earthquake there appeared anomalous behavior in the data, just like the generator is roaring.   It is not caused by earthquake vibration but by some electromagnetic effect.  This paper clearly expresses the possibility of predicting an earthquake.  English translation of the full text is not ready.

 Forum: Earthquake Prediction Research: Introduction to the Research of Short-term (or Just-before) Prediction of Earthquakes by Use of Electromagnetic Phenomena: Especially Works by Professor Takumi Yoshioka (Hokkaido Univ. of Science) (Editor: Toru Nakagawa) (Mar. 7; Mar. 9; Mar. 27, 2015)

Even though somewhat exceptional for the present site, I am going to start the Forum for introducing researches on earthquake prediction by posting various papers and articles. My intentions are:
(a) Short-term (or just-before) prediction of earthquakes is eagerly desired.  Seismological Society of Japan (SSJ) and Japanese government, however, state that short-term prediction of earthquakes is (almost) impossible and make no significant efforts for research in such a direction.
(b) SSJ regards it impossible, because it uses mechanical aspects (e.g., position, displacement, stress, vibration, etc.) as the keys. If so, we should better try to use different types of signals, especially electromagnetic signals, as TRIZ suggests.
(c) The electromagnetic aspects of earthquakes are not yet well known, and researches in such directions are often criticized premature or even as a fake.   However, we should make efforts in multiple aspects in parallel, e.g., discoveries of new phenomena, inventions of methods for detecting and observing new phenomena, revealing the mechanisms of the new phenomena, inventions of extracting and utilizing useful information from the new phenomena, etc., so as to stimulate one another.
(d) Last year, Earthquake Prediction Society of Japan (EPSJ) was established for promoting the research of short-term earthquake prediction especially putting stress on electromagnetic aspects.
(e) I recently learned Professor Takumi Yoshioka's work where some electromagnetic signals are detected with online monitoring system of electric power generators.  Since I think it hopeful and significant, I wish to support the promotion of its examination and further development.
(f)  This Index page of the Forum will show indexes of articles posted in the present site, references, and discussions, etc.  [Index to references has been enhanced in the Japanese page. (Mar. 27, 2015)]

 TRIZ Paper: Industrial application:  Development of a Spinning Top by TRIZ & TM & Simulation -- Challenge at All-Japan Koma Taisen -- (Tomohiko Katagiri (IDEA), SWCN)  (Mar. 7, 2015)

This paper was presented last September at Japan TRIZ Symposium (see my Personal Report ) and obtaind the 'Best presentation for me' Award as a result of participants voting. 
'All-Japan Manufacturing Industry Koma Taisen (Spintop battles)' was first held in Feb. 2012 and second in Feb. 2013.   The koma (or spintop) must be smaller than 20 mm in diameter and be turned by fingers without using any tool.   There is no limit in the weight, length, shape, materials, etc.   The battle between 2 komas is performed on a slightly concave ring. The koma spinning longer on the ring wins the game, and the koma winning the game twice in a row win the match. See the battles and komas in the Koma Taisen site
The presentation slides explain the processes of considering various contradictions in the design and examining different design prototypes by use of Taguchi method and simulations.  The SWCN's koma (named 'cat's punch') was extraordinary in its shape; just after turning, the koma opens its 3 arms for hitting out the competitor, and it won the second place at the Second All-Japan Koma Taisen.
In the Japanese page, Extended Abstract and the presentation slides are shown in HTML; Slides in PDF in the JTS site.   In the English page, Extended Abstract only is shown; See the slides in English (translated by JTS) via the link .

  TRIZ News:  TRIZ News in Japan  ( Mar. 7, 2015)

 Japan TRIZ Society (JTS) is going to hold 11th TRIZ Symposium in Japan on Sept. 3 - 4, 2015 in Tokyo.   (Mar. 7, 2015) 

 Japan Creativity Society (JCS) is going to hold 37th Annucal Conference on Oct. 3- 4, 2015 in Osaka.   (Mar. 7, 2015)

  TRIZ News:  TRIZ News Outside Japan  ( Mar. 7; Apr. 25, 2015)

Altshuller Institute: Next year TRIZCON2016 has been announced to be held on Mar. 3-5, 2016 at New Orleans, LA . (Apr. 25, 2015)

Altshuller Institute: Dr. H. James Harrington was ellected as the new President.  New strategic plan is under preparation.  TRIZCON2015 was held on Feb. 10-12, 2015 at Houston, TX (Mar. 7, 2015)  

Korea: 6th Global TRIZ Conference 2015 in Korea (KoreaTRIZCON2015) is to be held on Jul. 7-9, 2015 at Seoul, Korea (Mar. 7, 2015)

ICSI 2015 is to be held on Jul. 15-17, 2014, at Hong Kong. (Mar. 7; Apr. 25, 2015)
       Preliminary Agenda is announced:  Invited Keynote & Tutorial Speakers:  Sergei Ikovenko, Toru Nakagawa, Oleg Feygenson

MATRIZ: TRIZfest-2014 Conference and related events will be held on Sept. 10 - 12, 2015 in Seoul, Korea.  (Mar. 7, 2015)

ETRIA TRIZ Future Conference 2015 will be held on Oct. 26-29, 2015 in Berlin, Germany (Mar. 7, 2015)

 Paper: Social revolutions:  Generalized structure of social revolutions (Tetsutarou Yasuhira (Advanced Institute of Science and Technology, Japan))  (Feb. 10, 2015)

Originally published in Journal of Japan Society of Information and Knowledge in 2010, and reposted here under the permission of JSIK. The author describes the processes of big social changes, or revolutions, in a general and conceptual way.  Since TRIZ tries to identify and solve contradictions to proceed for ideality, we know that we can apply TRIZ not only to technological problems but also non-technological, human, and social problems. The abstract and the figure in English show the essence of the present paper, I hope. The full paper and author's profile are posted in the Japanese page.

 TRIZ Paper:  TRIZ marketing for the Ubiquitous concept ~ So that anyone uses TRIZ anywhere anytime ~ (Shigeru Kasuya (Proengineer-institute))  (Feb. 10, 2015)

Presented last Septmber at 10th Japan TRIZ Symposium. Responding to the TRIZ users' apparent/hidden needs, the author tries to make TRIZ inexpensive and ubiquitous, with the slogan of "Anyone can use TRIZ anywhere anytime."  He presents 10 examples of such solutions:  Smart phone version of 40 Inventive principles (1 screen/principle); 40 Inventive principles adapted for the IT/software field; understanding various other methods in relation to TRIZ (e.g., Checklist method by Osborne, NM method (by Masakazu Nakayama), Wai-gaya meeting at Honda, Goal deployment, QC story approach, etc.).  For more detail, you may refer to the author's Web site (in Japanese) .  In the Japanese page , the presentation slides and their full explanation are shown in parallel in HTML.  In the English page, Extended Abstract and Presentation slides (in images) are posted in HTML, while the PDF file of the Presentation slides is accessible through a link to JTS Web site.

 Paper: Creativity Tool and methods:  Introduction to Visual Thinking Software 'Fuda-Yose Tool' and Its Web site 'Thinking School I' (Akihiro Katahira)  (Jan. 18, 2015)

The author developed a handy software tool for drawing and handling labels smoothly on Excel sheets for supporting 'Visual Thinking'.  Information in Excel cells can be converted with a click into labels, and such labels, connecting lines, and enclosures may be moved around smoothly on the sheet.  The use of the software stimulates users' thoughts in idea generation, document composition, discussions in a group, etc.  The author has also built a Web site describing various methods for generating thoughts in a systematic, yet easy to understand manner.   He puts emphasis on his 'Visual Thinking' supported by his 'Fuda-Yose' software tool.   In Japanese the software tool and the Web site are fully described, while in English only the tool is introduced by Nakagawa's translation.


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 TRIZ Forum: Letters from Readers (Dec. 2014 - Jan. 2015)(Jan. 18, 2015)  Index page of "Letters from Readers"

English pageEllen Domb (USA), Yury Danilovsky (Korea), Simon Dewulf (Australia), Valeri Souchkov (Netherlands), TS Yeoh & Tan Eng Hoo (Malaysia), Atom Mirakyan (Germany), Richard Langevin (USA), Sarimah Misman (Malaysia), Toru Nakagawa (Japan)
(a) Danilovsky noticed me of his paper on deriving solution ideas.directly from disadvantages of systems   (b) Dewulf, the former owner of CREAX (Belgium), moved to Australia and developed unique software 'patentinspiration.com', by starting AULIVE.  (c) Souchkov noticed us the TRIZ Glossary recently developed by MATRIZ.  (d) The activities of MyTRIZ (in Malaysia) are quite remarkable.  (e) Mirakyan noticed me of his new paper on the application of OTSM-TRIZ.  (f) Langevin announced that Altshuller Institute has elected Dr. H. James Harrington as its new President and is going to hold TRIZCON2015 jointly with Innova-Con soon in February. 

Japanese page Toru Nakagawa; Akira Kobayashi (Brother Industries Ltd.); Akihiro Katahira; Toshihiro Hayashi; Noboru Ohsumi; Takumi Yoshioka (Hokkaido Science Univ.); Ryo Iwatani;
(g) For studying TRIZ Su-Field modeling and Inventive Standards, I recommended Davide Russo's recent paper.  (h) Hayashi responded to Prof. Yamaguchi's paper saying that he also experienced 'Paradigm Disruptive Innovation' in the software development in Hitachi.  (i) Yoshioka noticed me that 'Earthquake Prediction Society of Japan' was established last July with the desire of short-term prediction of earthquakes on the basis of electromagnetic phenomena of earthquakes.

 TRIZ Paper:  Finding the needs of customer by the SN Matrix and TRIZ process -- The functional approach for connecting methods and 7 solutions -- (Takashi Ogata, Kazuhiro Fujikawa, Hiroyuki Tsuchiya (OLYMPUS Corp.))  (Jan. 18, 2015)

Presented at 10th Japan TRIZ Symposium 2014 and won the 'Best Presentation for Me' Awards by the participants voting.  The authors pursue for the methods of linking their technological seeds (S) with their customers needs (N); they want to provide new products/services of attractive quality and to reveal some hidden needs of customers. For such a purpose they have developed a scheme of describing their aims and means consistently in terms of 'functionality'.  For each of the functions, the authors clarify their goal/current levels of realizing the function, competitors' technology (contents and their levels), customers' requirements, and priority, and write them down in a tabular form named as 'SN Matrix'. The SN Matrix is consistently applicable in their 7 categories of problem solving processes (or 'solutions'). -- This is an excellent presentation having experiences of real applications and theoretical framework together.  Extended Abstract in HTML and in PDF and Presentation slides in HTML images.  The Japanese page is composed in a similar way. 

 From the Editor:  Message for the New Year 2015 (Toru Nakagawa (OGU))  (Jan. 8, 2015)

Greetings from Japan for a Happy New Year 2015!!  Wish the year be healthy, happy, and successful for you all and peaceful in the World. I am posting the New Year card in Japanese which I sent to many Japanese friends whom I got acquainted before my TRIZ days. I am much concerned about the current situations of Japanese society.  Prime Minister Shinzo Abe is driving Japan in the wrong direction.  Democracy in Japan is not working well unfortunately.  There are many big and complex issues to be addressed in relation to lives of people. -- In such a situation, I should do my best what I can; i.e., to establish the General methodology of  creative problem solving (CrePS) and to spread it widely.  I have written down several tasks and plans for the new year 2015.  I wish to work for them in collaboration you.  Best wishes!


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 TRIZ Forum: Letters from Readers:  Introduction to A New Publication: "TRIZ 40 Principles" by Yoshinori Takagi (Yoshinori Takagi; Toru Nakagawa)  (Jan. 8, 2015)

The present page introduces to an excellent new publication  in Japanese, "TRIZ 40 Principles" by Yoshinori Takagi, published by Discover 21, Inc., Tokyo, on Aug. 30, 2014.  The book is very well organized in the contents, in the grouping of Principles, in the descriptions of individual Principles, and in illustrating application examples of the Principle, etc.  It is quite reasonable that the book has been one of the best sellers in the Engineering/Patents & Invention genre in Amazon.co.jp.  Congratulations!!  Unfortunately, however, in the belt and in the Preface of the book, the descriptions look too much journalistic/sensational, used to be typical in late 1990s in Japan, and contain several misleading catch copies in relation to the TRIZ history in the former USSR.  Nakagawa sent a comment to Mr. Takagi on such misleading catch copies for the purpose of preventing them from being spread to readers new to TRIZ.  (Full description in Japanese, but shorter in English.)

 TRIZ Paper:  SUGOROKU of TRIZ Inventive Principles ~ 40 Principle Symbols Arranged on 9 Windows ~ (Yoshinori Takagi)  (Jan. 8, 2015)

This paper was presented at 10th TRIZ Symposium in Japan, Sept. 11-12, 2014. Extending the work of hand-script symbols of the 40 Inventive Principles, the Author is reporting the idea of classifying the 40 principles into 9 groups for easier teaching. The principles are classified into 4-membered groups from the top, with a minor adjustment to make the 8th and 9th groups into 6-membered groups. He has given names to the nine groups, then arranged them in the 9 windows (3x3), and made the path of going through them in a way like a sugoroku game. He explains how to teach and utilize the Principles and their symbols, by using the 'Making harmless' group of Principles 21 to 24. English translation of slides was supported by Toru Nakagawa.  The present site posts the Extended Abstracts  , and slides in HTML   and in PDF  


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 TRIZ Paper:  Symbolize TRIZ 40 principles (Yoshinori Takagi (Sony))  (Jan. 8, 2015)

Presented at 8th Japan TRIZ Symposium 2012. TRIZ 40 Principles are very powerful tools but 40 are too many to remember.  Thus the Author devised hand-script symbols of the principles by arranging the style of the principle number to represent the meaning of the principle. In this manner, the principles and their numbers have been made easier to remember in pairs.  By using them repeatedly, one can remember the principles by heart and can use, say, the Contradiction Matrix fluently and take notes of principles coming out in mind while reading technical documents, he says.  The present site posts the Author's Extended Abstract and slides in HTML in Japanese, while it has a link to the slides in English PDF at the Japan TRIZ Society site.

Posted in 2014


 Innovation Paper:  Rethinking Innovation (The Blue LED case and Paradigm Disruptive Innovation) (Eiichi Yamaguchi (Doshisha Univ.; currently: Kyoto Univ.)  (Dec. 10, 2014)

Professor Yamaguchi is the author of "FUKUSHIMA Report', posted here in Sept. 2013 .   In October this year, I met him for the first time at ICSTI2014 and impressed with his presentation on innovation.  So I read his book "Innovation -- Paradigm Disruptions and Fields of Resonance" (NTT Press, 2006) (in Japanese).  He investigated the cases of innovation of transistors and blue LEDs and discussed about the structure of innovations.  He argues that the case of LED innovation (and many others) is not the type of Christensen's Disruptive Innovation (of decreasing the performance for some other needs/purposes) but the type of Paradigm-Disruptive Innovation (by disrupting/changing the basic/physical paradigm).  He discusses how such paradigm change can be achieved, and why big excellent companies often fail in front of such a paradigm change. On my request he kindly sent me his two papers, which are summaries of his book and were published in Japanese (2004) and in English (2006), and permits me to repost them here publicly. 
Tonight (Dec. 10, 2014), three Japanese researchers, Professor Isamu Akasaki, Professor Hiroshi Amano, and Professor Shuji Nakamura are to be jointly awarded the Nobel Prize in Physics 2014 "for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources".  Congratulations!  -- I am very happy to repost Professor Yamaguchi's paper here now, with which we can learn how the Nobel Prize awarded LED innovation was achieved and how we would be able to contribute to future innovations. 

 TRIZ Forum: Conference Report (30) Personal Report of The 10th TRIZ Symposium in Japan, 2014 (Sept. 11-12, 2014, Tokyo)(Toru Nakagawa (OGU)) (Nov. 27, 2014) 

The 10th Japan TRIZ Symposium 2014 was held last September by Japan TRIZ Society. The Symposium for 2 days had 135 participants in total (mostly from industries, and some from academia; 36% participated for the first time; from overseas: 2 invited speakers + about 3(?) participants). Invited talks: Keynote lecture by Anatoly Guin, Special Invited lecture by Shin Taguchi, and Tutorial 1. 27 Contributed presentation (including 22 oral + 5 poster presentations (including 1 from overseas)). The Symposium was organized well, obtained high-level presentations, and had increased number of participants, all showing its big success. The aspect that the contributions from overseas to presentations and participations are quite small need to be improved.
For all the presentations, slides are projected in Japanese and in English in parallel.   Japan TRIZ Society has recently posted the invited talks and 5 award-winning contributed presentations openly in their Official Web site, while all other contributed presntations in the Members-only pages.
For applying TRIZ, a number of industries have suuccessfully adapted TRIZ tools and processes so as to correspond the differences in purposes, characteristics, and fields of the problems and to match with the levels, orientations, available time, etc. of users.   They also request external consultants to guide them using TRIZ tools suitable for and effective in their needs and situations.  Similarly for the integral use of other methods (e.g., QFD, Taguchi method, Kepner-Tregoe method, etc.), they start using them by smoothly linking the essential parts of them.   Apparently TRIZ people in Japan are increasingly interested in applying TRIZ to the problems in software, non-technology, and social fields.   There are also many trials to make the TRIZ tools easy to understand and effective to use.   In these many aspects, we can say that Japanese industries are advancing TRIZ usage and achieving results in the real jobs.
A vivid report was givien by a national college of technology, but almost no report on TRIZ educaion in unversities.
Even though "innovation" is the top-level fashonable keyword in Japan and in the world, we still have not succeeded in introducing TRIZ into national policy and projects, industrial top managements, universities and academia, etc.   This is the most important problem for us TRIZ community. We should think and work harder.

 TRIZ Forum:  Letters from Readers (Aug. - Nov., 2014)(Nov. 27,2014)  Index page of "Letters from Readers"

Japanese page  : T. Hayashi, M. Ishihama (Kanagawa I. T.), A reader, F.q. Xjo (Kinki Univ.), Y. Hasegawa, K. Miyanishi, Y. Oyanagi (Kobe Univ.), J. Watanabe, T. Maekawa (Japan QC Society), T. Miyamoto, T. Sadahiro, M. Sugata, A reader, T. Nakagawa
The publication of "TRIZ practices and Benefits" book series are appreciated by several readers. Many readers highly evaluated the four Entrance Pages, in their reader-friendly and easy-access nature to many articles strored in the present site.   Mr. T. Maekawa introduced 'What is TRIZ?' to about 300 people in the Tokyo-Yokohama region of Japan QC Association in his News Letter. Several readers communicated me to have started learning TRIZ with the articles in this site.

English page : J. Hipple (USA), Z. A. Rahim (Malaysia), U. Mishra (India), A. Shmonov (Russia), S. Misman (Malaysia), J. Cook (UK), Z. A. Majid (Malaysia), R. Langevin (USA), E. Domb (USA), R. C. P. Thalupuru (India), S. S. Arshard (Australia), I. Kholkin (USA), J. Duflou (Belgium), D. Verduyn (USA), W. Sallaberger (Austria), N. & O. Bogatyrev (UK) 
I received an inquirely about the situations and possibiities of publishing Japanese Editions of TRIZ books. Mr. A. Shmonov have sent me several times so far on his work of "Computers can invent independently".  The four "Entrance pages" are evaluated highly.  On the 16th Anniversary of "TRIZ Home Page in Japan", many people sent me messages of congratulations and encouragements.  Thanks so much.

-- CrePS/TRIZ/USIT Paper:  General Methodology of Creative Problem Solving & Task Achieving (CrePS): Reorganizing Various Application Cases and Their Methods in the ‘Six-Box Scheme’ (Toru Nakagawa)  (Nov. 7, 2014)

Three papers of the same title but with some adjustments were presented at three conferences: i.e.,  (A) Japan TRIZ Society, 10th TRIZ Symposium in Japan (Sept. 11-12, 2014, at Waseda Univ., Tokyo); (B) Japan Creativity Society, 36th Annual Conference (Oct. 25-26, 2014, SANNO Institute of Management, Tokyo); (C) European TRIZ Association (ETRIA), 14th World TRIZ Future Conference 2014 (Oct. 29-31, 2014, EPFL, Lausanne, Switzerland).  My main message is: "We can establish the General methodology CrePS on the basis of TRIZ/USIT research by reorganizing a wide variety of problem solving methods in the 'Six-Box Scheme'".  The on-going research activities for developing CrePS are: (1) To make course materials of CrePS case studies. (We should just use case studies already published.) (2) To understand different methods (including TRIZ) and to describe them in the framework of CrePS. (3) To relate CrePS to various activities in the 'Real world'. (4) To categorize various purposes of CrePS application, and to recommend concise CrePS processes for each category.  (5) To proliferate the vision of CrePS. -- I wish you to share this vision and collaborate together!
In the English page, the slides presented at ETRIA TFC are posted but not the paper yet until ETRIA's public posting in Elsevier Procedia.  In the Japanese page, the slides (for ETRIA TFC in Japanese translation ) and the paper (for JCS ) are posted.  In addition, the following PDF files are also posted: Paper (for JCS ), Slides (for Japan TRIZ Sympo   , for JCS  , for ETRIA TFC  ).

  -- Editorial:  On the 16th Anniversary of  "TRIZ Home Page in Japan":  (Toru Nakagawa) (Nov.  7, 2014)

This Web site "TRIZ Home Page in Japan" celebrates its 16th Anniversary on Nov. 1 together with readers in Japan and over the world.  This site is to promote the understanding and real usage of TRIZ by openly publishing information and communications related to TRIZ 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 TRIZ learners/practitioners.  I envisage that Pubic Web Sites built in different TRIZ Communities will form A Global TRIZ Community with much reduced language barriers .  Since two years ago I have been proposing to establish a General methodology for creative problem solving & task achieving by integrating various creativity methods including TRIZ/USIT .  I am going to widen the scope of this Web site gradually in future.   The number of visits since November 2005 is (on Nov. 4) 212,212 (increasing by about 14,000 for the last 1 year) to the top page in Japanese and 36,711 (increasing by about 3,300) to that in English.  Four Entrance Pages have recently been installed for your easy access to articles.  Readers' contributions either in English or in Japanese are heartily welcome.


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 

(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 Publications: "TRIZ Practices and Benefits" Series 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