- 2023/01 - 現在 Durham University Law School Visiting Professor
- 2017/04 - 現在 Hokkaido University Graduate School of Law The Advanced Institute for Law and Politics Visiting Fellow
- 2017/04 - 2020/09 Hokkaido University University Office Executive Director & Vice President
- 2005 - 2020/09 同 センター 教授
- 2014/12 - 2016/12 Hokkaido University
- 2011/04 - 2014/12 Hokkaido University
- 2004 - 2008 Hokkaido University Graduate School of Law
- 2004 - 2008 Director in General
- 2000 - 2005 Hokkaido University Graduate School of Law
- 1991 - 2000 同 学部 教授
- 1991 - 2000 Professor
- 2000 - - Professor
- 1983 - 1991 Hokkaido University School of Law
- 1983 - 1991 Associate Professor,Associate Professor (Faculty of Law, 1983-1991), Professor (Faculty of Law, 1991-2000), Professor (School of Law, 2000-present)
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