- 1988 - 2002 Gifu University
- 1988 - 2002 Gifu University, Professor
- 1983 - 1988 Gifu University
- 1983 - 1988 Gifu University, Associate Professor
- 1977 - 1983 Gifu University
- 1977 - 1983 Gifu University, Lecturer
- 1971 - 1977 Gifu University
- 1971 - 1977 Gifu University, Research Assistant
- 1969 - 1971 Hokkaido University
- 1969 - 1971 Hokkaido University, Research Assistant
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