US Patent Issued to DENKA on March 17 for "Phosphor powder, light-emitting device, image display device, and illumination device" (Japanese Inventor)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,462, issued on March 17, was assigned to DENKA COMPANY Ltd. (Tokyo).

"Phosphor powder, light-emitting device, image display device, and illumination device" was invented by Hideyuki Emoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A phosphor powder including phosphor particles which are a phosphor represented by a general formula Mx(Si, Al)2(N, O)3plus-minusy (where M is Li and one or more alkaline earth metal elements and 0.52less than equal toxless than equal to0.9 and 0.06less than equal toyless than equal to0.36 are satisfied) and in which a part of M is substituted with a Ce element, wherein a Si/Al atomic ratio is equal to or more ...