- 2001 - - 育英工業高等専門学校 教授
- 2001 - - Salesian Polytechnic Professor
- 1986 - 1999 Kogakuin University
- 1986 - 1999 Kogakuin University, Professor
- 1980 - 1985 Kogakuin University
- 1980 - 1985 Kogakuin University, Assistant Professor
- 1966 - 1979 Kogakuin University
- 1966 - 1979 Kogakuin University, Lecturer
- 1958 - 1965 Kogakuin University
- 1958 - 1965 Kogakuin University, Research Assistant
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