He was born in
Kanazawa,
Ishikawa prefecture, in 1885. In 1906 he entered the Department of Chemistry of Tokyo Imperial University, where he studied under Tamemasa Haga and Kikunae Ikeda. He continued his study in the graduate college of the university, and the Degree of Doctorate of Science was conferred for his research related to cyano-complex compounds of iron. In 1917 he entered the Institute of Physical and Chemical Research (RIKEN), where he started to work in the research of analysis of various minerals. As he appointed to study radiochemistry, he went to U.K. in 1919. He was appointed to join the laboratory of Frederick Soddy, however due to the circumstance of Soddy he studied in the laboratory with Charles Heycock for a while, who was the chemist in the Cambridge University. He joined to work in the laboratory of Frederick Soddy from October 1920 until June 1921, in which his study was focused on the radiochemistry. They were called "IL Stone", which had patented in 1955. He established "Iimori Laboratory, Ltd." to run the business for the creation and trading them. Some of those gemstones were exported mostly to the U.S. in 70's as well as traded in Japan. ==Translation "Isotope" into Japanese as "Doi genso ( 同位元素 )"==