- 2014/04 - 2019/03 International College for Postgraduate Buddhist Studies Postgraduate School for Buddhist Studies Professor
- 1999/04 - 2012/03 東北大学 大学院文学研究科 インド学仏教史 教授
- 1999/04 - 2012/03 Graduate School of Arts and Letters, Tohoku University Professor
- 2012 - Tohoku University
- 1996 - 1999 Tohoku University The Faculty of Arts and Letters
- 1996 - 1999 Faculty of Arts and Letters, Tohoku University Professor
- 1995 - 1996 Osaka University School of Letters, Institute of Indian Philosophy
- 1995 - 1996 Faculty of Letters, Osaka University Professor
- 1991 - 1995 Osaka University School of Letters
- 1991 - 1995 Faculty of Letters, Osaka University Associate Professor
- 1988 - 1991 Iwate University Faculty of Humanities and Social Sciences
- 1988 - 1991 Faculty of Human and Social Sciences, Iwate University Associate Professor
- 1987 - 1988 フライブルク大学インド学講座 非常勤講師
- 1987 - 1988 Lehrstuhl fuer Indologie an der Universitaet Freiburg Lehrbeauftragter
- 1983 - 1987 エルランゲン大学 インド・ヨーロッパ語比較言語学研究室 研究助手
- 1983 - 1987 Institut fuer Indogermanistik der Universitaet Erlangen-Nuernberg Wissenschaftlicher Mitarbeiter
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Japan Society for Historical Linguistics
, ミュンヒェン言語研究会会員
, Mitglied des Muenchener Sprachwissenschaftlichen Studienkreises
, 印度学宗教学会
, The Association for Indology and Study of Religion
, インド思想史学会
, Association for the Study of the History of Indian Thought
, 日本佛教學曾
, The Nippon Buddhist Research Association
, Indoeuropean Society
, Indogermanische Gesellschaft(印欧語学会)
, 日本印度學佛教學曾
, Japanese Association of Indian and Buddhist Studies
, 日本オリエント学会
, The Society for Near Eastern Studies in Japan
, 日本宗教学会
, Japanese Association for Religious Studies
, 日本南アジア学会
, The Japanese Association for South Asian Studies
, 日本言語学会
, The Liuguistic Society of Japan