- 1990 - 1998 Tokyo University of Technology School of Engineering
- 1990 - 1998 Association Professor, Faculty of Engineering,
- 1986 - 1990 Tokyo University of Technology School of Engineering
- 1986 - 1990 Assistant Professor, Faculty of Engineering,
- 1985 - 1986 苫小牧駒沢短期大学英文科 助教授
- 1985 - 1986 Association Professor, Faculty of English,
- 1979 - 1985 苫小牧駒沢短期大学英文科 専任講師
- 1979 - 1985 Assistant Professor, Faculty of English,
- Tokyo Engineering University
- Tomakomai Komazawa Junior College
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