US Patent Issued to NICHIA on April 8 for "Nitride phosphor and method for producing same" (Japanese Inventors)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,269,978, issued on April 8, was assigned to NICHIA Corp. (Anan, Japan).

"Nitride phosphor and method for producing same" was invented by Takayuki Shinohara (Anan, Japan) and Shimpei Kinoshita (Anan, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided a method for producing a nitride phosphor. The method includes preparing a mixture that comprises a first nitride and a cerium source, the first nitride comprising, as a host crystal, a crystal having the same crystal structure as CaAlSiN3; and performing a heat treatment of the mixture at a temperature of 1,300deg C. to 1,900deg C. to obtain a second nitride. The first nitride comprises aluminum,...