Tokushichi Mishima

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Tokushichi Mishima
Tokushichi Mishima photographed by Shigeru Tamura.jpg
Born(1893-02-24)February 24, 1893
DiedNovember 19, 1975(1975-11-19) (aged 82)
Nationality Japanese
Alma materTokyo Imperial University
Known for MKM steel
Scientific career
Fields metallurgy
Institutions Tokyo Imperial University

Tokushichi Mishima (三島 徳七, Mishima Tokushichi, February 24, 1893 November 19, 1975) was a Japanese metallurgist. He discovered that aluminum restored magnetism to non-magnetic nickel steel. He invented MKM steel, which was an extremely inexpensive magnetic substance that has been used in many applications. It is also closely related to the modern Alnico magnets. He later became a professor at the Tokyo Imperial University. After his death, his remains were buried in the Tama Cemetery in Tokyo.



On April 18, 1985, the Japan Patent Office selected him as one of Ten Japanese Great Inventors. [1]

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  1. "Ten Japanese Great Inventors". Japan Patent Office.