- 2000 - 2004 東北大学大学院 非常勤講師
- 2000 - 2004 Tohoku University, Graduate School, Part-time Lecturer
- 1999 - 2003 University of Shizuoka
- 1999 - 2003 University of Shizuoka, Part-time Lecturer
- 1979 - 2001 Tohoku University
- 1979 - 2001 Tohoku University, Part-time Lecturer
- 1978 - 1988 Tohoku Gakuin University
- 1978 - 1988 Tohoku-Gakuin University, Assistant Professor
- 1988 - Ibaraki University
- 1988 - Ibaraki University, Part-time Lecturer
- 1986 - Ibaraki University
- 1986 - Ibaraki University, Part-time Lecturer
- 1984 - Ibaraki University
- 1984 - Ibaraki University, Part-time Lecturer
- 1983 - Iwate University
- 1983 - Iwate University, Part-time Lecturer
- 1982 - Ibaraki University
- 1982 - Ibaragi University, Part-time Lecturer
- 1976 - 1977 Hachinohe National College of Technology
- 1976 - 1977 Hachinohe Technological College, Assistant Professor
- 1972 - 1976 Hachinohe National College of Technology
- 1972 - 1976 Hachinohe Technological College, Full-time Lecturer
- 1971 - Tohoku University
- 1971 - Tohoku University, Assistant
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