Koyama Yasushi

J-GLOBAL         Last updated: Aug 10, 2019 at 02:41
Koyama Yasushi
Sophia University
Graduate School of Law, Juris Doctor Program(Law School)
Job title
Other affiliation
Sophia University
Research funding number

Research Areas


Academic & Professional Experience

Apr 1995
Mar 2001
Lecture, Setsunan University, Faculty of Law
Apr 2001
Mar 2003
Associate Professor, Ritsumeikan University, Faculty of Law
Apr 2003
Mar 2013
Professor, Ritsumeikan University, Faculty of Law

Published Papers

Case Notes: Supreme Court Case, December 7, 2017 on title retention clause
Koyama Yasushi
The Financial and Business Law Precedents   (1548) 8-13   Sep 2018   [Invited]
Case Review: Perfection of Chattel Mortgage by way of Constructive Transfer with Retention of Possession.
Yasushi Koyama
154(1) 173-187   Mar 2018   [Refereed][Invited]
Infringement of Security Interests on Invntory and Recievables Financing and Authority of Security Grantor: From the Viewpoint of Duty of Maintenance of Collateral Value
Yasushi Koyama
Ritsumeikan Law Review   (363=364) 219-241   Mar 2016   [Invited]
Case Comment : Apportionment by Right of Retention on the Promissory Notes Under the Reorganization Procedure
KOYAMA, Yasushi
2012(3) 2068-2098   Aug 2012
Significance of Unjust Factor Under the Law of Restitution and Unjust Enrichment
Yasushi Koyama
Ritsumeikan Law Review   (336) 263-318頁   Aug 2011


Workshops: Legal problems of the disposition of collateral on asset based lending
(73) 143-145   Apr 2011   [Invited]

Books etc

Civil Law ?: Study with the Variouse Materials Chaptger 12, Law of Tors, Special Rules
Koyama Yasushi
Civil Law ?: Study with the Various Materials, Chapter 11, Law of Torts: General Principles
Koyama Yasushi
The Tracing Rights to Proceeds based on the Chattel Mortgage
Koyama Yasushi

Conference Activities & Talks

Legal Problems of the Disposition of Collateral on Asset Based Lending
Shiho No.74   2010   

Research Grants & Projects

Studies of Hypothecon Reul Property
Comparative Law About Flouting Liens For inventory Financing
Inventory Financing, hypothec
Study on Floating Charge on Shifting Shock