Research Associate, Faculty of Law, The University of Tokyo (1975)
Associate Professor, Faculty of Law, The University of Tokyo (1978)
Visiting Professor, Harvard Law School (1991-1992)
Professor, The University of Tokyo Graduate Schools for Law and Politics (1991-2013)
The University of Tokyo (LL.D., 2004)
Professor, Waseda Law School (2013-2023)
Emeritus Professor, The University of Tokyo (2013-)
Emeritus Professor, Waseda University (2023-)
Major Activities
Secretary of Commercial Code Subcommittee, Legislative Council, Ministry of Justice (1983-1999)
Secretary of Business Accounting Council, Ministry of Finance (1985-1986)
Diplomatic Secretary (Representative of Japanese Government to United Nations Commission on International Trade Law) (1987-2004)
Associate Member of Telecommunication Council, Ministry of Posts and Telecommunications (currently the Ministry of Internal Affairs and Communications) (1988-1996)
Director of Japan Association of the Law of Finance (1992-2014)
Associate Member of Agricultural Policy Council, Ministry of Agriculture, Forestry and Fisheries (1996)
Secretary of Bankruptcy Law Subcommittee, Legislative Council, Ministry of Justice (1996-2001)
Temporary Member of Central Government Asset Council, Ministry of Finance (1998-2001)
Member of First Subcommittee, Financial System Council, Financial Services Agency (1998-2001)
Chairman of Steering Committee, Life Insurance Policyholders Protection Corporation of Japan (1998-2011)
Member of Civil Code Subcommittee, Legislative Council, Ministry of Justice (1999-2001)
Visiting Investigator of Investigation Section, Committee on Judicial Affairs, House of Council, National Diet of Japan (1999-2000)
Consultant to Japan Securities Dealers Association (1999-2002)
Temporary Member of Legislative Council, Ministry of Justice (2001-2008)
Member of Financial System Council, Financial Services Agency (2001-2011)
Temporary Member of Fiscal System Council, Ministry of Finance (2001-2011)
Director of Japan Association of Private Law (2001-2007)
Member of Postal Services Policy Council (2003-2008)
Director of Land Institute of Japan (2003-2005)
Member of Business Accounting Council, Financial Services Agency (2005-2015)
Temporary Member of Council for Small and Medium Enterprise Policy, Ministry of Economy, Trade and Industry (2005-2006)
Chief Director of Japan Association of Private Law (2005-2007)
Chief Director of Japan Association of the Law of Finance (2005-2014)
Deputy Director-General of Supervisory Bureau, Financial Services Agency (2006-2008)
Temporary Member of Social Capital Development Council, Ministry of Land, Infrastructure, Transport and Tourism (2007-2009)
Bar Examiner at National Bar Examination Commission (New National Bar Examination) (2008-2009)
Director of Financial Accounting Standards Foundation (2009-2015)
Member of Legislative Council, Ministry of Justice (2010-)
Chairman of Corporate Legislation Subcommittee, Legislative Council, Ministry of Justice (2010-2012)
Director of Type II Financial Instruments Firms Association (2010-)
Director of Life Insurance Policyholders Protection Corporation of Japan (2011-)
Member and Chairman of Financial System Council, Financial Services Agency (2015-2019)
Member of The Japan Academy (2023-)
Outside Director of Shiseido Company, Limited (2018-)
