Private International Law, International Transaction Law, International Law, International Civil Procedure Law.
Kyoto University (LL.B., 1968); Graduate School of Law, Kyoto University (LL.M., 1975).
- Professional and Academic Associations

・Assistant Professor and Professor, Graduate School of Law, Hokkaido University(1975-1985)
・Professor, Graduate School of Law, Kyoto University (1985-2008)
・Visiting Professor, Philipps-Universität Marburg, Germany (1994-1995)
・President, Private International Law Association of Japan (2002-2008)
・Division Head, Division of Private International Law, Legislative Council of the Ministry of Justice (2003-2006)
・President, Japanese Society of International Law (2006-Present)
・Professor, Konan Law School (2008-Present)
・Council Member, Legislative Council of the Ministry of Justice (2009-Present)
・Dai-ichi Tokyo Bar Association
・Japan Association of the Law of Civil Procedure
・Japan Association of Private Law
・Japanese American Society for Legal Studies
・Japan Association of International Economic Law
・Board Member, International Law Association, Japan Branch
・Deutsch-Japanische Juristenvereininigung
・Member, Science Council of Japan
・Adjunct lecturer, Ryukoku University Graduate School of Law (April 2010-Present)
・Adjunct lecturer, Ryukoku University Law School (April 2010-Present)