- 2023 - 2028 財産権論の再構成に関する学際的研究-シェア・ライセンス・コモンズ
- 2019 - 2023 アメリカ型政教分離体制の近代的成立に関する歴史的研究:1780-1833
- 2018 - 2021 空間と法の相互規定性から見た公法学の再構築-学際的アプローチ
- 2015 - 2019 Historical Development of Religious Liberty in the U.S. Supreme Court: 1940-1971
- 2015 - 2018 Interdisciplinary Approach to the Transformation of Public Law in a Shrinking Society: Care, Inclusion, Community
- 2014 - 2017 Land,Electoral System,Autonomy : Rebuiding Representaive Democracy
- 2012 - 2015 Comparative and Interdisciplinary Research on the Social Policies for Conviviality
- 2012 - 2015 Interdisciplinary approach to "Civil Society" under the methodological framework of social constructivism: Risk, Governance, Social Solidarity
- 2011 - 2015 Studies of American Citizenship in the First Half of the Nineteenth Century
- 2009 - 2014 The Historical Origin and Development of Church-and-State Relations in the United States and Japan
- 2009 - 2011 An interdisciplinary approach to "structural-reform type of governance" from a social constructivist perspective
- 2007 - 2010 Creating Public Cultures : Continuity and Discontinuity of Social Norms in the United States from the Colonial to the Early National Period
- 2005 - 2008 A study of U.S. Constitution and the Separation of Church and State
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