- 1996 - 2000 Research Institute for Production Development
- 1996 - 2000 BRAIN Researcher
- 1989 - 1996 新技術事業団 研究員
- 1989 - 1996 ERATO., Researcher
- 1983 - 1986 Wakamoto Pharmaceutical Co., Ltd.
- 1983 - 1986 Wakamoto Pharmaceutical Co. Ltd., Researcher
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