Graduate, University Tokyo, 1958. Doctorate, University Tokyo, 1968.
Researcher, Yawata (Japan) Iron & Steel Company, 1958-1972; senior researcher, Nippon Steel Corporation, Kawasaki, Japan, 1973-1980; chief researcher, Nippon Steel Corporation, Kawasaki, 1980-1990; professor, Science U. Tokyo, Shinjuku, Japan, since 1990.
Member American Association for the Advancement of Science, National Association Corrosion Engineers, International Technology Institute (life member).
Married Ikuko Tanaka, September 21, 1968. Children: Yöko, Kenichiro.