- 1981 - 1995 Tamagawa University
- 1981 - 1995 Tamagawa University, Professor
- 1995 - - 朝日大学 教授
- 1995 - - Asahi University, Professor
- 1991 - 1994 Tamagawa University
- 1991 - 1994 Tamagawa University, Dean
- 1974 - 1981 University of Yamanashi
- 1974 - 1981 Yamanashi University, Professor
- 1962 - 1974 University of Yamanashi
- 1962 - 1974 Yamanashi University, Assistant Professor
- 1957 - 1962 Tokyo Institute of Technology
- 1957 - 1962 Tokyo Institute of Technology, Research Assistant
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