- 2022 - 2027 Areal typology toward understanding the formation process of endangered languages in the North Pacific Rim
- 2018 - 2022 Network Reinforcement toward the Formative Process Elucidation of Endangered Northern Languages
- 2014 - 2018 Research Toward the Completion of A Koryak Grammar;Focusing on the Aspects of Voice and Clause Construction
- 2010 - 2015 Establishment of a netwok for the study of endangered languages in Northeast Asia
- 2010 - 2014 Descriptive and typological study on the adjective predicate structure in Koryak
- 2009 - 2012 Comparative study on polysynthesis of the languages in North eastern Asia from typological and historical point of view
- 2007 - 2009 A Study of the Genealogical and Typological Diversity of Endangered Paleosiberian Languages
- 2004 - 2007 Comparative Studies on the Polysynthesis of the Languages in North-eastern Siberia and North America
- 2004 - 2006 Linguistic Anthropological Study on the Categorization of Natural Environment in Koryak
- 2003 - 2005 Typological Study on Languages of the North Pacific Rim
- 1999 - 2003 環太平洋の「消滅に瀕した言語」に関する緊急調査研究
- 2000 - 2002 東シベリアの古アジア諸語にかんする緊急調査
- 1999 - 2001 Culture changes and Identities in North-Eastern Asia
- 1998 - 2000 Urgent Linguistic Fieldwork of the Pacific Rim
- 1998 - 2000 Audio Data Base and Linguistic Change of the North Pacific Languages
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