ALEXANDRIA, Va., July 14 -- United States Patent no. 12,678,857, issued on July 14, was assigned to SHIN-ETSU CHEMICAL Co. LTD. (Tokyo).
"Method for manufacturing rare earth magnet" was invented by Hajime Nakamura (Echizen, Japan), Koichi Hirota (Echizen, Japan) and Tetsuya Ohashi (Fukui, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to the present invention, a method for manufacturing a rare earth magnet that is capable of manufacturing a high-performance rare earth magnet with stable quality in large amount by the grain boundary diffusion method utilizing a film formed by the physical vapor phase deposition method is provided."
The patent was filed on Aug. 27, 2020, under Application No. ...