US Patent Issued to YANTAI ZHENGHAI MAGNETIC MATERIAL, NANTONG ZHENGHAI MAGNET on Nov. 3 for "R-Fe-B sintered magnet, preparation method and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,784,948, issued on Nov. 3, was assigned to YANTAI ZHENGHAI MAGNETIC MATERIAL Co. LTD. (Yantai, China) and NANTONG ZHENGHAI MAGNET Co. LTD. (Nantong, China).

"R-Fe-B sintered magnet, preparation method and use thereof" was invented by Zhaopu Xu (Yantai, China), Dongdong Li (Yantai, China), Guodong Su (Yantai, China) and Weiwei Bu (Yantai, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An R-Fe-B sintered magnet, and a preparation method therefor and use thereof are provided. The surface of the R-Fe-B sintered magnet has an oxide adhesive layer, and is obtained by means of the heat preservation and heat treatment of an R-Fe-B magnet having a composite...