- 1993 - 1998 株式会社富士通研究所,部長
- 1993 - 1998 Fujitsu Research Laboratories, Manager
- 1998 - - 大阪学院大学,教授
- 1998 - - Osaka Gakuin University, Professor
- 1980 - 1993 富士通株式会社,研究員,部長
- 1980 - 1993 Fujitsu Limited, Researcher, Manager
- 1967 - 1980 The University of Tokyo Faculty of Science
- 1967 - 1980 The University of Tokyo, Faculty of Science, Assistant
- 1976 - The Ohio State University
- 1976 - Ohio State University(USA), Post-Doctoral Fellow
- 1969 - 1971 ミネソタ大学(米国),博士研究員
- 1969 - 1971 University of Minnesota(USA), Post-Doctoral Fellow
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日本創造学会
, European TRIZ Association (ETRIA)
, The Altshuller Institute for TRIZ Studies
, Association for Computing Machinery(ACM)
, 分類学会
, 情報処理学会
, European TRIZ Association
, Altshuller Institute for TRIZ Studies
, Association for Computing Machinery (ACM)
, Japan Creativity Society
, Japan Statistics Society
, Japan Information Processing Society