1955 B.S. Department of Physics, Faculty of Science, University of Tokyo
1961 PhD, Graduate School, College of Arts and Science, University of Rochester
1963 Doctor of Engineering, University of Tokyo
1964 - 1979 Associate Professor and Professor, Institute of Plasma Physics, Nagoya University (former institute of present National Institute of Fusion Science)
1979 - 1992 Professor, Department of Physics, Faculty of Science, University of Tokyo
1992 - 2000 Professor, Department of Applied Physics, Faculty of Engineering, Seikei University
1992 - Professor Emeritus, University of Tokyo
1980 - 1988 member of Editorial Board of ’Nuclear Fusion’ (Journal pubished by International Atomic Energy Agency)
1992 - 2002 Guest Scientist, Japan Atomic Energy Research Institute
1999 - 2002 member of ITER Physics Expert Group: ITER (International Thermonuclear Experimental Reactor)