Engineer. Born in Kumamoto Prefecture. Graduated from Mechanical Engineering Department of Kumamoto Higher Technical School (1914). Became assistant at Engineering Department of Kyiishii University, assistant professor at Kumamoto Higher Technical School, and professor at Tokushima Higher Technical School (1923) and professor of Kumamoto Women's University (since 1950). Went
to U.S.A. and Germany, studying at Massachusetts Institute of Technology, U.S.A. and working at the factory of Reinecke Company, Germany (1925-27). Books in clude Kosaku Kikai (Machine Tool) and Taikei Kosaku Kikai (Systematic Machine Tool).