- 2005 - 2007 Tamagawa University Graduate School of Management
- 2001 - 2007 Tamagawa University College of Business Administration
- 2001 - 2007 Dean,Faculty of Business Administration,Tamagawa University
- 2007 - - 玉川学園・玉川大学知的財産本部部長
- 1976 - 1997 早稲田大学社会科学研究所特別研究員
- 1976 - 1997 Special Researcher,Institute of social Sciences,Waseda University
- 1993 - 1995 Tamagawa University
- 1993 - 1994 Waseda University
- 1993 - 1994 Lecturer,Waseda University
- 1986 - 1993 Kyorin University
- 1986 - 1993 Lecturer,Kyourin University
- 1983 - 1991 Tamagawa Gakuen Junior College for Women
- 1983 - 1991 Lecturer,Tamagawa Gakuen Women's Junior College
- 1979 - 1990 Tamagawa University
- 1979 - 1990 Associate Professor of Tamagawa University
- 1990 - - 玉川大学教授
- 1990 - - Professor of Tamagawa University
- 1987 - 1988 Tokai University
- 1987 - 1988 Lecturer,Toukai University
- 1986 - 1987 国学院大学非常勤講師
- 1986 - 1987 Lecturer,Kokugakuin University
- 1985 - 1987 Meiji Gakuin University
- 1985 - 1987 Lecturer,Meiji Gakuin University
- 1982 - 1986 Waseda University
- 1982 - 1986 Lecturer,Waseda University
- 1983 - 1984 Meiji Gakuin University
- 1983 - 1984 Lecturer,Meiji Gakuin University
- 1982 - 1983 駒沢大学非常勤講師
- 1982 - 1983 Lecturer,Komazawa University
- 1973 - 1979 Tamagawa University
- 1973 - 1979 Lecturer of Tamagawa University