- 1990 - 1999 国立予防衛生研究所昆虫医科学部 室長
- 1990 - 1999 National Institute of Health, Department of Medical Entomology
- 1999 - - 筑波大学農林学系 教授
- 1999 - - University of Tsukuba, Institute of Agriculture and Forestry
- 1973 - 1990 Takeda Pharmaceutical Company Limited
- 1973 - 1990 Takeda Chemical Industries Ltd., Laboratories of Agricultural Chemicals
- 1971 - 1973 日本学術振興会 奨励研究員
- 1971 - 1973 Post-doctoral fellow, Japan Society for the Promotion of Science
- 1973 - - 農林水産省農業技術研究所 非常勤職員
- 1973 - - National Institute of Agricultural Science and Technology(part-time)
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