PhD, Tulane University, 1962. Counsel to Nagashima, Ohno & Tsunematsu, a leading international law firm in Tokyo. Professor Emeritus, The University of Tokyo, 1994-. Professor Emeritus, Seikei University, 2010-. Professor of Law, Seikei University, 1994-2013. Professor of Law, The University of Tokyo, 1984-1994. Professor of Law, Sophia University, 1968-1983