US Patent Issued to HRL Laboratories on Dec. 30 for "Doped-nanoparticle photochromic heterostructures" (California Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,624, issued on Dec. 30, was assigned to HRL Laboratories LLC (Malibu, Calif.).

"Doped-nanoparticle photochromic heterostructures" was invented by Shirell Klein (Los Angeles), Adam Gross (Santa Monica, Calif.), Gregory Rutkowski (Calabasas, Calif.) and Erik Crenshaw (Los Angeles).

According to the abstract* released by the U.S. Patent & Trademark Office: "Some variations provide a photochromic heterostructure comprising: first semiconductor nanoparticles that have an average first-nanoparticle effective diameter from 1 nanometer to 20 nanometers, wherein the first semiconductor nanoparticles are not doped; and second semiconductor nanoparticles that have an average second-nanopart...