- 2001 - 2004 Shohoku College
- 2001 - 2004 Shohoku College, Professor
- 1981 - 2001 Shohoku College
- 1981 - 2001 Shohoku College, Associate Professor
- 1974 - 1981 Shohoku College
- 1974 - 1981 Shohoku College, Lecturer
- 1971 - 1974 Ochanomizu University
- 1971 - 1974 Ochanomizu University, Assistant
- 1969 - 1971 Ochanomizu University
- 1969 - 1971 Ochanomizu University, Technical official
- 1969 - Ochanomizu University
- 1969 - Ochanomizu University, Educational Assistant
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