He became the research chief of the Technical Department of Seikosho, the technical manager of Seikousho, the deputy head of Seikousho for Tomonari and a research manager at the same time; subsequently, he was the vice head of Chuo Gijutsu Kenkyusho, Chuo Technical, and then became the Torishimariyaku head of Chuo Gijutsu Kenkyusho, Chuo Technical Laboratory, in November 1962, became Jomu, and then took the position of Senmu in November 1970, Sodanyaku and chairman of Sumitomo Precision Products Co., Ltd. in November 1972.
製鋼所技術部研究課長、技術部長、同所長友成代理兼研究部長、中央技術研究所副所長を経て、昭和37年11月取締役中央技術研究所長となり、常務を経て、昭和45年11月専務に就任、同47年11月に相談役、住友精密工業会長となった。