US Patent Issued to DENKA on Aug. 4 for "Phosphor powder, light-emitting device, image display device, and illumination device" (Japanese Inventor)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,441, issued on Aug. 4, 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 of a phosphor represented by a general formula Mx(Si, Al)2(N, O)3plus-minusy and in which a part of M is substituted with a Ce element, the phosphor powder includes phosphor particles in which a Si/Al atomic ratio is equal to or more than 1.5 and equal to or less than 6, an O/N atomic ratio is equal to or more than 0 and equal to or less than 0.1, 5 to 50 mol % of M is...