- 1988 - 2002 Sendai National College of Technology
- 1988 - 2002 Professor of Sendai National College of
- 1978 - 1988 Sendai National College of Technology
- 1978 - 1988 Associate Professor,Sendai National College
- 1974 - 1978 Sendai National College of Technology
- 1974 - 1978 Recture,Sendai National College of Technology
- 1973 - 1974 Sendai National College of Technology
- 1973 - 1974 Resarch Associate,Sendai National College of
- of Technology
- Technology
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