TRIZ: Theory of Inventive Problem Solving, Understanding and Introducing it

Author: Toru Nakagawa

Abstract:

"Theory of Inventive Problem Solving (TRIZ)" has been developed and systematized since 1946 in ex-USSR and has become known to the western countries after the end of the Cold War as a new methodology for technological innovation. It is based on the philosophy: "Improvements, innovations, and evolutions of technologies share some common aspects across their fields and their eras. Thus, by extracting such shared essences out of a large number of excellent cases, and by making them easy to retrieve after classification, we may reuse them for facilitating new development of technologies. Especially, excellent cases of technology innovation can be understood in a number of patterns of breaking through the contradictions in the problem; such patterns provide us hints for our own creative innovation."

This paper was originally published in "TRIZ Home Page in Japan" in Feb 1999. Reposted in trizsite.com under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/eIntroduction980517.html

USIT -- Creative Problem Solving Procedure with Simplified TRIZ

Author: Toru Nakagawa

Abstract:

The author believes that for introducing TRIZ into Japanese industries we should master and apply USIT first because of its easiness to learn and apply. The present paper describes about the USIT methodology, in accordance to its problem solving steps by illustrating some application examples. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in Apr 2000. Reposted in trizsite.com under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/eUSITJSDE000424/eUSITJSDE000424.html

Approaches to Application of TRIZ in Japan

Author: Toru Nakagawa

Abstract:

History and current activities of introducing TRIZ in Japan are summarized. TRIZ has been introduced into Japan for these three years and gradually getting popularity among pioneering engineers in industries. But Japanese TRIZ learners/practitioners still have much difficulty in mastering the way of thinking and in applying TRIZ to their actual problems. For overcoming this difficulty, several textbooks have been published in Japanese and a public WWW site "TRIZ Home Page in Japan" is serving. Needs of easier process for creative problem solving has been recognized, and USIT (Unified Structured Inventive Thinking) developed at Ford has been introduced as a simplified TRIZ methodology. Case studies and training practices of USIT are presented. The "Slow-but-Steady" strategy of introducing TRIZ into Japanese industries is recommended. ...

This paper was originally published in “TRIZ Home Page in Japan” in May 2000. Reposted in trizsite.com with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site below.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/eTRIZJapan000501/eTRIZJapan000501.html

Learning and Applying the Essence of TRIZ with Easier USIT Procedure

Author: Toru Nakagawa

Abstract:

Possible reasons for making the introduction of TRIZ into western industrial countries slow are discussed. It is suggested that the presentation of the huge body of TRIZ knowledge and methodology has screened its essence and has overwhelmed the learners. For solving this difficulty, the author's understanding of the essence of TRIZ is presented in 50 words and explained briefly. The needs of simpler and clearer procedures are argued for solving problems creatively with the spirits of TRIZ. The author finds that USIT (Unified Structured Inventive Thinking) developed by Ed Sickafus is a good candidate for such a simplified TRIZ procedure. Hence he explains the USIT procedure in relation to the essence of TRIZ and demonstrates his practices of training/applying USIT in Japan.

This paper was originally published in “TRIZ Home Page in Japan” in Nov. 2001. Reposted in trizsite.com under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

           

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/eETRIAPapers0111/eETRIAPaper011107.html

Introduction to TRIZ, A Technological Philosophy for Creative Problem Solving

Author: Toru Nakagawa

Abstract:

TRIZ is a technological philosophy born in the former USSR and is a methodology for creative problem solving. TRIZ has extracted principles of invention from analysis of a huge body of patent bases, has revealed laws of evolution of technical systems, and has established general procedures for problem solving, especially for solving contradictions. The key to penetration of TRIZ into industries is its simplification. The present paper expresses the essence of TRIZ concisely, and introduces USIT as an easier procedure for creative problem solving containing such TRIZ' essence.

This paper was originally published in “TRIZ Home Page in Japan” in Jan 2002. Reposted in trizsite.com (TRIZsite Journal) under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/eIntro011223/eIntroJCS011104.html

Experiences of Teaching and Applying the essence of TRIZ with easier USIT procedure

Author: Toru Nakagawa

Abstract:

Experiences of conducting 3-day training seminars of USIT ("Unified Structured Inventive Thinking") in Japan are reported in detail. Engineers from multiple companies participated the seminars and were trained with lectures and group practices of solving real brought-in problems by applying USIT step by step. Current revised version of the USIT methodology itself is described in detail, as taught in the 3-day seminar. Methods of teaching USIT, applying USIT, and introducing USIT in industries are also described together with the reactions of the participants.

           

This paper was originally published in “TRIZ Home Page in Japan” in May 2002. Reposted in trizsite.com under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2002NakaPapers/eTRIZCON2002/eTRIZCON02USIT020508.html

Reorganizing TRIZ Solution Generation Methods into Simple Five in USIT

Author: Toru Nakagawa, Hideaki Kosha and Yuji Mihara

Abstract:

As Solution Generation methods, TRIZ has provided a large number of techniques and principles: 40 Principles of Invention, 76 Standards of Inventive Solutions, Trends of Evolution of Technological Systems, Separation Principle, etc. This shows the richness in TRIZ, but also makes pitfalls of difficulty and confusion. In the present study all these TRIZ methods are reclassified in the framework of USIT (Unified Structured Inventive Thinking). USIT has only five Solution Generation Methods: i.e. Object Pluralization, Attribute Dimensionality, Function Distribution, Solution Combination, and Solution Generalization Methods. It is remarkable that the huge variety of TRIZ methods are smoothly mapped onto these five USIT methods. The USIT Solution Generation Methods are now enhanced much with TRIZ-origin methods and have clear guidelines. Thus the present work has reorganized TRIZ into a much simpler yet more effective process for problem solving: namely, USIT.

           

This paper was originally published in “TRIZ Home Page in Japan” in ”, Nov. 2002. Reposted in trizsite.com under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2002NakaPapers/eETRIA02USIT0209/eETRIA02USIT0209.html

Usage of USIT Solution Generation Methods: A Simple and Unified System of TRIZ

Author: Toru Nakagawa, Hideaki Kosha and Yuji Mihara

Abstract:

We have reorganized the whole body of TRIZ solution generation methods (including Inventive Principles, Inventive Standards, Trends of Evolution, and Separation Principle) and unified them in the framework of USIT (Unified Structured Inventive Thinking). USIT has only five Solution Generation Methods. They are operations of Pluralization onto Objects, Dimensional change onto Attributes, Distribution onto Functions, and Combination and Generalization onto Solution elements. Each of these operations has several variations which are well described by guidelines enriched with know-hows of TRIZ. Thus USIT Solution Generation Methods form a simple and unified system of the whole TRIZ methodology. For using them effectively, problem solvers should prepare during the problem definition and problem analysis stages for clear understanding of the mechanism of the problem system in terms of USIT basic concepts of Objects-Attributes-Functions as well as Space and Time. Using this scheme, we have been applying USIT to various industrial problems. Usage of the scheme is illustrated in case of the “Picture Hanging Kit Problem”. Experiences of promoting and applying TRIZ/USIT in a Japanese industry are also presented.

           

This paper was originally published in “TRIZ Home Page in Japan” in Jan 2003. Reposted in trizsite.com under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2003NakaPapers/eTRIZCON2003/eTRIZCON03Usage030303.html

Problem Solving Methodology for Innovation: TRIZ/USIT

Author: Toru Nakagawa

Abstract:

This paper was presented as an invited talk at the First Symposium on Knowledge Creation Support Sytems held at JAIST near Kanazawa in February 2004. This paper is an intorduction of TRIZ to novices. It reflects my recent understanding of TRIZ, evolving little by little as I learned Darrell Mann's textbook, a number of case studies presented at conferences and Web sites, and practices of applying TRIZ/USIT by myself, etc. Writing a new introductory article is always a good thing not only for readers but for the author himself. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in Aug 2004. Reposted in trizsite.com under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2004Papers/eNakaJAIST0402/eNakaTRIZIntro040825.html

Practices of Applying TRIZ/USIT in Japan

Author: Toru Nakagawa

Abstract:

Acceptance of TRIZ in Japan seems to be changing from its early stage of mixture of enthusiasm and skeptism around 1998 to more practical application trials with better understanding in current days. TRIZ knowledge-base tools were once the symbol of introducing TRIZ in firms, but we now realize the capability of in-house application of TRIZ to real problems and of in-house training of TRIZ is the more important measure of penetration. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in May 2004. Reposted in TRIZsite Journal with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2004Papers/eNakaTRIZCON2004/eNakaTRIZCON2004Japan.html

USIT Operators for Solution Generation in TRIZ: Clearer Guide to Solution Paths

Author: Toru Nakagawa

Abstract:

The biggest reason for slow penetration of TRIZ into industries in Western countries is that very rich contents of TRIZ knowledge bases and individual methods of problem solving have been tried to teach without clear overall procedure/structure for problem solving. It has been traditional that principal solution generation methods in TRIZ, including Inventive Principles, Inventive Standards, and Trends of Evolution, are applied separately on the basis of their own problem analysis methods.

Present paper demonstrates, on the other hand, that Unified Structured Inventive Thinking (USIT) is a simplified and unified version of TRIZ which has overcome the above-mentioned weak-point. All the solution generation methods in TRIZ have been reorganized into a unified hierarchical system of USIT Solution Generation Operators. On this basis, USIT has a clear procedure for creative problem solving process as shown in a flowchart and also has a clear structure, as shown in a dataflow diagram, of transforming problem information stepwise into solution information. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in Nov 2004. Reposted in TRIZsite Journal under the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site below.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2004Papers/eNakaETRIA0411/eNakaETRIA041115.html

A New Paradigm for Creative Problem Solving

Author: Toru Nakagawa

Abstract:

As a basic scheme for Problem Solving, the 'Four-Box Scheme' which advises to generalize the problem first into an abstract level and then to concretize it back has been widely accepted. The contents of the Four Boxes in this scheme, however, have not been well established in existing problem solving methodologies, which include analogical thinking utilizing with knowledge bases, Ichikawa's Equivalent Transformational Theory trying to extract essence from hints, and TRIZ (Theory of Inventive Problem Solving). TRIZ is typically faced with a confusing situation in its overall process due to having a large variety of techniques. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in Apr 2006. Reposted in TRIZsite Journal with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site below.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2006Papers/eNakaSixBoxJCS0604/eNakaSixBoxJCS060422.html

Software Engineering and TRIZ (1) Structured programming reviewed with TRIZ

Author: Toru Nakagawa

Abstract:

This is the first report of our research having three-folded purposes as follows: (1) to apply TRIZ to the problems related to software development and to extend the application field of TRIZ into software development and software engineering, (2) to clarify topics of software engineering with the TRIZ views, and further (3) to feed the principles/knowledge in software engineering/computer science back into TRIZ. For these purposes, we are going to make an approach of choosing topics in software engineering one by one and to consider about it with the whole aspects of TRIZ, including Inventive Principles, Inventive Standards, Trends of Evolution, and philosophical elements in TRIZ. ...

This paper was originally published in “TRIZ Home Page in Japan” in Jan 2005. Reposted in trizsite.com with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site below.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2005Papers/eNakaTRIZCON-SE1/eNakaTRIZCON2005-SE1-StrProg.html

Software Engineering and TRIZ (2) Stepwise Refinement and the Jackson Method Reviewed with TRIZ

Author: Toru Nakagawa

Abstract:

The Jackson Method (or Jackson Structured Programming) proposes to build the structure of the processing system in accordance with the data structures of inputs and outputs. Though TRIZ has a similar concept to model the system in accordance with the structure of its objects/environment/super-systems, TRIZ can learn more from the software concepts and techniques. The 'Prior-reading technique' is also discussed. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in Mar 2006. Reposted in trizsite.com with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2005Papers/eNakaETRIA-SE2/eNakaETRIA-SE2-StepRefine0511.html

A New Paradigm for Creative Problem Solving: Six-Box Scheme in USIT

Author: Toru Nakagawa

Abstract:

The 'Four-Box Scheme' of problem solving has long been regarded as a standard in TRIZ and science and technologies in general. Now that a huge number of models and knowledge bases have been accumulated, the Scheme has been found lacking in the meaningful general description of the contents of the four boxes. The present author has proposed the 'Six-Box Scheme of Creative Problem Solving' on the basis of detailed description of the overall structure of the USIT methodology. The procedure for performing the Scheme is already well established in the form of USIT. Implications of the 'Six-Box Scheme' with USIT are discussed in comparison with the 'Four-Box Scheme' with traditional TRIZ.

           

This paper was originally published in “TRIZ Home Page in Japan” in Nov 2006. Reposted in TRIZsite Journal with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For more details please refer to the author's site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2006Papers/eNakaTRIZSymp0609/eNakaTRIZSymp-USIT061025.html

Overall Dataflow Structure for Creative Problem Solving in TRIZ/USIT

Author: Toru Nakagawa

Abstract:

While TRIZ and other solving procedures advise to go through a generalized problem and its generalized solution, this may cause ambiguity by analogical mapping. USIT has refined the knowledge base developed in TRIZ without relying on analogical mapping.

The overall structure of creative problem solving in USIT has been built into a six-box scheme in the dataflow representation. User's specific but vague problem should be converted into a well-defined user's problem, and analyzed to obtain understandings of the present system and of its ideal system, then transformed (by USIT operators for solution generation) into ideas of new system(s), and further built into conceptual solutions, and finally implemented into user's specific solutions.

           

This paper was originally published in “TRIZ Home Page in Japan” in Jun 2005. Reposted in trizsite.com with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2005Papers/eNakaTRIZCON-USIT/eNakaTRIZCON2005-USIT-6Box.html

Classes of 'Creative Problem Solving Thinking' -- Experiences at Osaka Gakuin University

Author: Toru Nakagawa

Abstract:

Experiences of the classes of 'Creative Problem Solving Thinking' at Faculty of Informatics of Osaka Gakuin University are reported. A course of 15 lectures has been given to 2nd year (and over) students with the theme of 'Methodologies for Creative Problem Solving'. Since the students do not have much background knowledge of technologies yet, the course is taught by giving basics of doing research and thinking and basics of concepts of systems and functions. Processes of problem solving were explained step by step showing various examples and different methods mostly of TRIZ and USIT. In the Seminar Classes, small groups of students were trained on the theme of 'Creative Problem Solving Thinking' at about 27 classes for 3rd and for 4th year students. Training is mostly done with group practices by using published or new case studies. Students have solved various everyday-life problems as their thesis works. A new Web site "TRIZ Home Page for Students by Students" has been established in March 2006, posting their thesis woks and discussions on their findings with TRIZ/USIT. Some case studies of solving everyday-life problems are demonstrated. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in May 2007. Reposted in TRIZsite Journal with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2007Papers/eNakaTRIZCON0704/eNakaTRIZCON2007-Teaching070505.html

Education and Training of Creative Problem Solving Thinking with TRIZ/USIT

Author: Toru Nakagawa

Abstract:

Experiences of teaching under-graduate students and training industrial engineers on how to think creatively in problem solving are reported. The contents are based on the TRIZ methodology but have been further reorganized and unified into USIT (Unified Structured Inventive Thinking) for easier to learn and apply. Case studies, published by engineers in technologies and obtained by students for everyday-life problems, are found useful in both teaching/training situations. ...

This paper was originally published in “TRIZ Home Page in Japan” in Nov 2007. Reposted in trizsite.com under the permission by Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2007Papers/eNakaETRIA2007-Teaching/eNakaETRIA2007-Teaching071115.html

A System for Preventing from Our Leaving Things Behind-- A Case in 2-Day USIT Training Seminar

Author: Toru Nakagawa

Abstract:

USIT (Unified Structured Inventive Thinking) is a methodology and an overall procedure for creative problem solving, originally developed by Ed Sickafus and then further enhanced by the present author as a new generation of TRIZ.Usage and training of USIT are demonstrated in the present paper by example of an actual case of problem solving in a 2-Day USIT Training Seminar carried out with participants in a multi-company situation. The problem was to concept a practical system for preventing from our leaving things behind, such as a bag on a train's shelf, glasses on a restaurant table, an umbrella at an entrance, etc. The initially-vague problem was to be defined more clearly in terms of 'the timing of leaving a thing behind'.Then the situation is analyzed in the USIT scheme of Objects-Attributes-Functions and Space & Time, and ideal solutions are imagined by use of the USIT Particles method.On the basis of these analyses various solution ideas are generated and are composed into a conceptual solution.This example shows the USIT's capability of handling problems which are initially-vague , related to software, and oriented to process, etc.

           

This paper was originally published in “TRIZ Home Page in Japan” in Jun 2006. Reposted in trizsite.com under the permission by Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site below.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/epapers/e2006Papers/eNakaUSITCaseTRIZCON0604/eNakaUSITCaseTRIZCON060619.html

Introduction to Umakant Mishra's TRIZ Principles for Information Technology

Author: Toru Nakagawa

Abstract:

This page introduces you to a new textbook "TRIZ Principles for Information Technology" written by Umakant Mishra (India). The book is pre-published as a draft edition from Technical Innovation Center, USA, for the purpose of getting review and comment from readers.

           

I had a chance to read the draft of its Introduction and first three chapters in May, 2006. I found the text excellent and later communicated with the Author directly in September to October last year to support his plan of publication in English and also to discuss the possibilities of translating into Japanese and of publishing (or, more exactly, getting published) the textbook in Japanese Edition. I saw the whole volume of this manuscript for the first time at TRIZCON2007 in Louisville in the above mentioned Draft edition. I found it really interesting and important; thus I bought 6 copies (i.e., all the left copies among 10 brought in by TIC) and carried them back to Japan in my suitcase. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in phases during Aug 2007 to Jan 2008. Reposted in TRIZsite Journal with the permission of Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site below.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/eforum/e2007Forum/eMishraTextbook0708/eMishraTextbook-070817.html

Global Network of Public Web Sites in TRIZ: A Proposal for Building Global TRIZ Community

Author: Toru Nakagawa

Abstract:

My proposal is (i) Let's build many Public Web sites in different TRIZ communities,

           

and (ii) set both outward-looking and inward-looking windows on them for overcoming the language barriers, and (iii) form an autonomous global network of them in the Internet. Thus the vision is in short: A Global TRIZ Community intermediated by many "TRIZ Home Page in XXXXX".

           

This paper was originally published in “TRIZ Home Page in Japan” in May 2008. Reposted in trizsite.com under the permission by Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer to the author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/eforum/e2008Forum/ePublicSites08/ePublicSitesProposal080525.html

Japanese Translation Project of Umakant Mishra's IT and TRIZ Book

Author: Masatoshi Hotta and Toru Nakagawa

Abstract:

This is the page for introducing you to the "Japanese Translation Project of Umakant Mishra's IT & TRIZ Book". The original English text was published with the title of "TRIZ Principles for Information Technology" as a Draft edition by Technical Innovation Center, USA (2007). Last year I posted a Web page for introducing this book to the people in Japan and in the world. The page contains (i) Introduction to the book, (ii) Contents of the book, (iii) about the position and significance of this book, and (iv) on the Japanese Translation Project. ...

           

This paper was originally published in “TRIZ Home Page in Japan” in Mar 9 & Sep 7, 2008. Reposted in trizsite.com under the permission by Dr. Nakagawa, Editor, TRIZ Home Page in Japan. For original contents please refer /emishrabookproject-08.html at author’s site.

http://www.osaka-gu.ac.jp/php/nakagawa/TRIZ/eTRIZ/eforum/e2008Forum/eMishraTextbook08/eMishraBookProject-08.html

Editorial: Appreciating Nakagawa’s Papers on TRIZ and USIT

Author: Umakant Mishra

Abstract:

I take this opportunity to write a few words about Dr. Toru Nakagawa, whose contribution to TRIZ is recognized by every TRIZ professional around the world. Dr. Nakagawa has been working dedicatedly on TRIZ and USIT since more than a decade. He actively participates in almost all international conferences on TRIZ including TRIZCON (organized by AI, USA), ETRIA TFC (organized by ETRIA) and TRIZ Symposium in Japan (organized by Japan TRIZ Society). He is one of the key persons to organize TRIZ Symposium in Japan, an International conference since 2005.

           

Dr. Nakagawa founded a website "TRIZ Home Page in Japan" in November 1998 and voluntarily served as the Editor of the site. He has written (and presented too) a large number of papers on TRIZ and USIT. His continuous effort on improving USIT and integration with TRIZ is praiseworthy. I am an admirer of Dr. Nakagawa’s research papers and thought of republishing some of his glorious papers in trizsite.com for the benefit of TRIZ lovers around the world. I am thankful to Dr. Nakagawa for his kind permission to republish the following papers in October 2008 issue of TRIZsite Journal.