- 1996 - 1998 Ministry of Agriculture, Forestry and Fisheries
- 1996 - 1998 MAFF, National Agriculture Research Center,
- 1994 - 1996 Ministry of Agriculture, Forestry and Fisheries
- 1994 - 1996 MAFF, Tohoku National Agricultural Experiment
- 1992 - 1994 Ministry of Agriculture, Forestry and Fisheries
- 1992 - 1994 MAFF, National Food Research Institute,
- 1989 - 1992 Ministry of Agriculture, Forestry and Fisheries
- 1989 - 1992 MAFF, National Agriculture Research Center,
- 1986 - 1989 Ministry of Agriculture, Forestry and Fisheries
- 1986 - 1989 MAFF, National Agriculture Research Center,
- 第4チーム長
- Principal Research Coordinator
- Station, Department Head
- Department Head
- Division Chief
- Team Leader
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