- 1994 - 2001 Kanagawa University Faculty of Law
- 1994 - 2001 Professor, Faculty of Law, Kanagawa University
- 2001 - - 神奈川大学法学部 特任教授
- 2001 - - Special Service Professor, Faculty of Law, Kanagawa University
- 1981 - 1994 Kobe University Faculty of Law
- 1981 - 1994 Professor, Faculty of Law, Kobe University
- 1976 - 1981 Otaru University of Commerce Faculty of Commerce
- 1976 - 1981 Professor, Faculty of Commerce, Otaru Commerce University
- 1954 - 1957 The University of Tokyo Faculty of Law
- 1954 - 1957 Research Assistant, Faculty of Law, Tokyo University
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