- 2018 - 2024 東アジアにおける終末期医療の倫理的・法的問題に関する国際共同研究
- 2016 - 2020 The possibility of the nuclear law system as sustainable public goods
- 2012 - 2016 Empowering Non-Profit Transfers by the State and the Design of Public Service
- 2009 - 2011 Constitutional and Public Law Analysis about the Public Health Law System in the 21st Century
- 2007 - 2011 Law and Ordering of Market and Society in the Post-"Structural Reform" Era-A New Legal System for Liberty and Communality-
- 2006 - 2008 Formation of social norms in accordance with the development of life and medical sciences: Construction of a basic law of bioethics
- 2006 - 2007 Principlism and Casuistry in Legal Thinking, The Moment of Care in Law and Its Place
- 2005 - 2007 Legal Theory of Aging Society
- 2004 - 2005 A Study on the Scope of Law and Justice and the Significance of Professional Ethics in the Institutionalization of Care
- 2000 - 2003 Synthetic Research for Establishment of Regional Legal-Network
- 2000 - 2002 Comparative legal research on problems brought about by the privatization of public enterprises
- 1999 - 2000 議会弁論と立法過程に関する法哲学的研究
- 1993 - 1996 Law and Rhetric
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