Bachelor of Science, Kyoto University, 1955. Doctor of Engineering, Kyoto University, 1968.
Director Switching Technology laboratories, Nippon Telegraph and Telephone, Tokyo, 1978-1980;
department director, engineering bureau, Nippon Telegraph and Telephone, Tokyo, 1980-1983;
director, Telecomms. Network laboratories, Nippon Telegraph and Telephone, Tokyo, 1983-1986;
executive vice president, research, Advanced Telecomms. Research Institute, Kyoto, 1986-1996;
counselor, Advanced Telecomms.
Research Institute, Kyoto, since 1996; counselor, Nippon Telegraph and Telephone electronics corporation, Tokyo, 1996-1998; fellow, Nippon Telegraph and Telephone Advanced Technology Corporation, Tokyo, since 1998. Chairman, honorary chairman technical assembly Telecomm. Technology Committee, Tokyo, since 1985.
Ad hoc committee member, representing Japan, International Switching Symposia, 1982-1987. Organizing committee member International Network Planning Symposium. Invited professor Waseda U., 1990-1992.
Committee member Ministry of Posts and Telecommunications, Tokyo, 1988-1996, 2000-2003, Kansai Economic Federation, Osaka, 1988-1996. Fellow Institute of Electrical and Electronics Engineers. Member Institute Electronics, Infor. and Communications Engineers (honorary, Distinguished Service award 1995, vice president 1991-1993).
Married Taeko Hashimoto, January 27, 1957. Children: Keishi, Junko Nakano.