- 1988 - 1989 :東洋大学工学部応用化学科・助教授
- 1988 - 1989 :Toyo University, Faculty of Engineering, Dept. of Applied Chemistry
- 1987 - 1988 :東京大学工学部化学工学科・助教授
- 1987 - 1988 :University of Tokyo, Faculty of Engineering, Dept. of Chemical Engineering, Associate Professor
- 1982 - 1987 :東京大学工学部化学工学科・講師
- 1982 - 1987 :University of Tokyo, Faculty of Engineering, Dept. of Chemical Engineering, Lecturer
- 1975 - 1982 :東京大学工学部化学工学科・助手
- 1975 - 1982 :University of Tokyo, Faculty of Engineering,Dept.of Chemical Engineering, Assistant
- 1981 - 1981 :University of Houston, Visiting Researcher
- 1981 - 1981 :University of Houston, Visiting Researcher
- 1979 - 1980 :University of Houston, Post Doctoral Researcher
- 1979 - 1980 :University of Houston, Post Doctoral Researcher
- Kogakuin University Faculty of Engineering, Department of Environmental and Energy Chemistry, Faculty of Engineering Department of Environmental and Energy Chemistry Professor,Osaka University