ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,836, issued on Feb. 10, was assigned to NICHIA Corp. (Anan, Japan).

"Fluoride phosphor and method of producing the same, wavelength conversion member, and light emitting device" was invented by Yohei Yamauchi (Tokushima, Japan), Tomokazu Yoshida (Anan, Japan) and Yuki Shiota (Tokushima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fluoride phosphor, comprising fluoride particles having an average particle size of 0.1 micro metre to 7 micro metre and a maximum particle size of 1 micro metre to 18 micro metre, wherein a ratio of the maximum particle size with respect to the average particle size is higher than 1. The fluoride particles have ...