- 1983 - 2000 日立マクセル(株)筑波研究所
- 1983 - 2000 Hitachi Maxell, Ltd. Tsukuba Research
- 1969 - 1983 Hitachi, Ltd., Mechanical Engineering Research Laboratory
- 1969 - 1983 Hitachi, Ltd. Mechanical Engineering Research
- Laboratory
- Kitakyushu National College of Technology Dept. of Control and Information Systems Engineering, Department of Control and Information Systems Engineering Professor
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