Bachelor of Engineering, University Tokyo, 1971. Master of Engineering, University Tokyo, 1973. Doctor of Engineering, University Tokyo, 1993.
Research engineer earthquake engineering Central Research Institute Electric Power Industry, Abiko, Japan, 1973-1983, senior research engineer earthquake engineering, 1983-1987, principal research engineer earthquake engineering, 1987-1989, research planning staff Abiko National Laboratory, 1989-1990, fellow earthquake engineering Abiko Research Laboratory, 1990-1991, manager in charge of international activity planning division, headquarters, 1991-1993, research fellow geotechnology, earthquake engineering department, since 1993. Visiting research engineer Electric Power Research Institute, 1986-1988.
Member Japan Society Civil Engineers (member subcommittee design rationalization of embeded Liquefied Natural Gas tank energy civil engineering committee since 1995, subcommittee seismic design of pile foundation earthquake engineering committee since 1997).
Married Masumi Sato, August, 1980. Children: Chihiro, Miho, Terry Takuya.