- 1978 - 1997 Osaka Prefecture University
- 1978 - 1997 Osaka Prefecture University, Professor
- 1968 - 1978 Osaka Prefecture University
- 1968 - 1978 Osaka Prefecture University, Assistant Professor
- 1965 - 1968 Ryukoku University
- 1965 - 1968 Ryukoku University, Assistant Professor
- 1961 - 1965 Ryukoku University
- 1961 - 1965 Ryukoku University, Lecturer
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