- 2001 - 2003 Nippon Bunri University
- 1989 - 2001 Nippon Bunri University, Professor
- 1988 - 2001 Nippon Bunri University
- 2001 - - Nippon Bunri University, President
- 1986 - 1988 Nippon Bunri University
- 1986 - 1988 Nippon Bunri University, Associate Professor
- 1985 - 1986 The University of Tokyo The Faculty of Engineering
- 1985 - 1986 The University of Tokyo, Lecturer
- 1965 - 1985 The University of Tokyo The Faculty of Engineering
- 1965 - 1985 The University of Tokyo, Research Assistant
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