- 1978 - 1981 Tokyo Denki University
- 1978 - 1981 Tokyo Denki University, Associate Professor
- 1981 - - 東京電機大学 教授
- 1981 - - Tokyo Denki University, Professor
- 1977 - 1978 Osaka Prefecture University
- 1977 - 1978 University of OSAKA Prefecture, Lecturer
- 1964 - 1977 Osaka Prefecture University
- 1964 - 1977 University of OSAKA Prefecture, Research Assistant
- 1961 - 1964 (株)クボタ 研究開発技術員
- 1961 - 1964 Kubota, Research Engineer
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