- 2018 - 2022 Analysis and Foundation of Older People Asset Management Institutions
- 2016 - 2020 Influence of substantive law in the interpretation and legislation of the civil execution act
- 2014 - 2017 Land,Electoral System,Autonomy : Rebuiding Representaive Democracy
- 2011 - 2016 情報化の進展による私法システムの変遷
- 2012 - 2015 Large-scale Disasters and Legal Issues
- 2012 - 2015 Basic and Cross-disciplinary Study for the Reform of Inheritance Law
- 2007 - 2009 A research for reform of the law of oblitations (particularly on obligee's subrogation right, obligee's right to demand the rescission of fraudulent act, claims and obligations of multiple-parties, assignment of claims)
- 2006 - 2009 Integrated studies on legal regulations of medical treatments and medical researches
- 2005 - 2008 General researches on the legal framework of debt collection
- 2004 - 2007 Analyse of the structure of 'service providing contract', a comparative study of Japanese-French law
- 1999 - 2001 契約法における意思の内容および役割を再考し、その現状とあるべき姿をさぐる。
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