US Patent Issued to Quarkstar on June 23 for "Lifetime color stabilization of color-shifting artificial light sources" (American, German Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,666,509, issued on June 23, was assigned to Quarkstar LLC (Las Vegas).

"Lifetime color stabilization of color-shifting artificial light sources" was invented by Eric Bretschneider (Corinth, Texas), Louis Lerman (Las Vegas) and Hans Peter Stormberg (Stolberg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system includes two or more phosphor-containing white LEDs (or other color-shifting artificial light sources) selected so that their combined color shift over at least 8,000 hours (e.g., at least 10,000 hours, at least 20,000 hours, at least 30,000 hours, at least 40,000 hours, up to 200,000 hours, up to 100,000 hours, up to 80,000 hours) of o...