- 1978 - 2001 Saitama University
- 1978 - 2001 Saitama University, Lecturer
- 1979 - 1982 Utsunomiya University
- 1979 - 1982 Utsunomiya University, Lecturer
- 1968 - 1982 Ashikaga University
- 1968 - 1982 Ashikaga Institute of Technology, Assistant,
- 1969 - 1981 Gunma University
- 1969 - 1981 Gumma University, Lecturer
- Assistant Professor
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