- 1990 - 1995 :高知大学 教授
- 1990 - 1995 :Kochi University, Professor
- 1981 - 1990 :高知大学 助教授
- 1981 - 1990 :Kochi University, Assistant Professor
- 1979 - 1981 :高知大学 講師
- 1979 - 1981 :Kochi University, Lecturer
- Shiga University Faculty of Economics, Department of Social Systems, Faculty of Economics Legal Systems Professor
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