ALEXANDRIA, Va., June 4 -- United States Patent no. 12,322,542, issued on June 3, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan) and NICHIA Corp. (Anan, Japan).

"Rare earth magnet and production method thereof" was invented by Masaaki Ito (Anjo, Japan), Reimi Tabuchi (Nisshin, Japan), Motoki Hiraoka (Toyota, Japan) and Hisashi Maehara (Itano-gun, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A Sm-Fe-N-based rare earth magnet more resistant to demagnetization than ever before, particularly at high temperatures, and a production method thereof are provided.The present disclosure presents a production method of a rare earth magnet, including mixing a SmFeN magnetic powder and a modifier powder to ob...