Bachelor of Science, Kyoto University, 1936. Doctor of Science, Kyoto University, 1945.
Member R & D staff, Toshiba Corporation, Kawasaki, 1936-1969; director general engineering center, Toshiba Corporation, Tokyo, 1969-1971; senior fellow R & D center, Toshiba Corporation, Kawasaki, 1971-1978; senior adviser R & D center, Toshiba Corporation, Kawasaki, since 1978. Chairman of the Board Nippon Nuclear Fuel Development Company, Oharai, Ibaraki, 1972-1978. Councilor, Ocean Development Council, Ministry of International Trade and Industry, Tokyo, 1970-1972.
Member Japan Electron Microscope Society (director 1949-1959), Physical Society Japan, Japan Society Applied Physics, Institute Electrical Engineers Japan, Atomic Energy Society Japan, American Association for the Advancement of Science, Sagami Country Club.
Married Nagami Tsukatani, October 13, 1947. Children: Akiko, Takeshi, Hiroko.