ALEXANDRIA, Va., July 16 -- United States Patent no. 12,672,403, issued on June 30, was assigned to Panasonic Intellectual Property Management Co. Ltd. (Osaka, Japan).
"Wavelength converter and light emitting device provided therewith" was invented by Mitsuru Nitta (Kyoto, Japan), Ryosuke Shigitani (Osaka, Japan), Emi Miyazaki (Osaka, Japan) and Toru Hirano (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a wavelength converter including a phosphor ceramic containing a first phosphor that emits fluorescence due to a parity-forbidden transition, and a phosphor part containing a second phosphor that emits fluorescence due to a parity-allowed transition. A main surface of the phosphor ce...