- 1999 - - 一橋大学大学院法学研究科 教授
- 1999 - - Prof. Hitotsubashi Univ., Graduate School of Law
- 1990 - 1998 Osaka University School of Law
- 1990 - 1998 Prof. Osaka Univ., Fac. of Law
- 1980 - 1989 Waseda University Institute of Comparative Law
- 1980 - 1989 Prof. Waseda Univ., Institute of Comperative
- 1975 - 1979 Waseda University Institute of Comparative Law
- 1975 - 1979 Assoc. Prof. Waseda Univ., Institute of
- 1973 - 1974 Waseda University Institute of Comparative Law
- 1973 - 1974 Lecturer, Waseda Univ., Institute of
- 1970 - 1972 Waseda University Institute of Comparative Law
- 1970 - 1972 Research Associate, Waseda Univ., Institute of
- Law
- Comperative Law
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