ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,117, issued on Sept. 22, was assigned to Mitsubishi Chemical Corporation; (Tokyo) and NATIONAL INSTITUTE FOR MATERIALS SCIENCE (Tsukuba, Japan).

"Phosphor, light-emitting device, illumination device, image display device, and indicator lamp for vehicle" was invented by Kyota Ueda (Tokyo), Tomoyuki Kurushima (Tokyo), Atsushi Ooishi (Tokyo) and Naoto Hirosaki (Ibaraki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A phosphor contains a crystal phase having a composition represented by RexMAaMBbMCcDdXe, and an element Z, in which a content of the element Z is 1,000 mass ppm or less, and the element Z includes at least one of Mo, W, Nb, Ta, Ni, ...