US Patent Issued to Transitions Optical on Dec. 23 for "Photochromic-dichroic articles" (Florida, Pennsylvania, Ohio Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,568, issued on Dec. 23, was assigned to Transitions Optical Ltd. (Tuam, Ireland).

"Photochromic-dichroic articles" was invented by Henry Nguyen (Largo, Fla.), Cory S. Brown (Pittsburgh), Anil Kumar (Murrysville, Pa.), Alan M. Grubb (Pittsburgh), Ramaiahgari Reddy (Murrysville, Pa.) and Yannian Li (Solon, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are photochromic optical articles including an optical substrate and an at least partial anisotropic layer disposed on the at least a portion of the surface of the substrate. The anisotropic layer includes an anisotropic polymer; a photochromic-dichroic dye, a photochromic dye, or combinat...