US Patent Issued to TDK on July 29 for "Ferrite sintered magnet, and method of manufacturing ferrite sintered magnet" (Japanese Inventor)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,374,477, issued on July 29, was assigned to TDK Corp. (Tokyo).

"Ferrite sintered magnet, and method of manufacturing ferrite sintered magnet" was invented by Shirou Ootsuki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a ferrite magnet including: magnetoplumbite type ferrite crystal grains; and a grain boundary phase interposed between the ferrite crystal grains. The ferrite crystal grains and the grain boundary phase respectively contain a metal element A, La, Co, and Fe, the metal element A is at least one kind of element selected from the group consisting of Sr, Ba, and Ca, and when an atomic ratio of Co to La in the ferrite cryst...