US Patent Issued to KYUSHU INSTITUTE OF TECHNOLOGY, TOKIN on April 21 for "Rare-earth cobalt permanent magnet, method of manufacturing the same, and device" (Japanese Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,222, issued on April 21, was assigned to KYUSHU INSTITUTE OF TECHNOLOGY (Kitakyushu, Japan) and TOKIN Corp. (Shiroishi, Japan).

"Rare-earth cobalt permanent magnet, method of manufacturing the same, and device" was invented by Masaaki Takezawa (Kitakyushu, Japan), Hiroaki Machida (Sendai, Japan), Teruhiko Fujiwara (Sendai, Japan) and Yu Kanamori (Sendai, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rare-earth cobalt permanent magnet according to the present disclosure comprises: 24 to 26 mass % of a rare-earth element R including Sm; 25 to 27 mass % of Fe; 4.0 to 7.0 mass % of Cu; 2.0 to 3.5 mass % of Zr; and Co and an unavoidable impurit...