- 2023 - 2027 中世漢字字書・語彙辞書統合データベースの構築による和訓の段階的構造の解明
- 2020 - 2023 原典資料に基づく、キリシタン語学の集大成
- 2018 - 2022 中世末期から近世初期の常用的漢字と常用的和訓についての横断的研究
- 2017 - 2020 Fundamental restructure of the Missionary Linguistics in Japan based on the source documents
- 2012 - 2016 A critical reexamination on the linguistic stadard of the Jesuit mission in Japan by the linguistic properth of "Fides no Quio"
- 2011 - 2015 Identifying vocabularies of the Japanese Early Christian documents by multi-lingual dictionaries
- 2010 - 2014 The principle of historical kanji glyph change and geographical kanji glyph difference
- 2009 - 2011 Corroborative research on distinctive function of Hentai-gana
- 2002 - 2006 Positive Research in Regard to the Transmission and Make up of Buddhist Scripture Collections -The Case of Kozanji-
- 2003 - 2004 近世初期古辞書の漢字字体に関する研究
- 2001 - 2004 The Origin of Japanese Printing Culture from a Viewpoint of East Asian Printing.
- 2001 - 2002 易林本節用集とJIS漢字の漢字字体について
- 2000 - 2001 Positive research on formation of the norm of Chinese character's style of Japan
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