US Patent Issued to DENKA on Sept. 15 for "Phosphor powder, wavelength conversion body, and light emitting device" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,639, issued on Sept. 15, was assigned to DENKA COMPANY Ltd. (Tokyo).

"Phosphor powder, wavelength conversion body, and light emitting device" was invented by Hiroki Banno (Tokyo) and Hiroaki Toyoshima (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A phosphor powder containing a phosphor represented by General Formula (I) below. In General Formula (I), M1 includes at least La and optionally further includes one or more elements selected from the group made of lanthanoid elements other than Y and La, M2 includes at least Ba and optionally further includes one or more elements selected from the group made of Mg, Ca, and Sr, x is equal to or mor...