ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,965, issued on Oct. 14, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Optical film" was invented by Carl A. Stover (St. Paul, Minn.), Lin Zhao (Woodbury, Minn.), Gilles J. Benoit (Minneapolis) and Robert D. Taylor (Stacy, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical film includes a plurality of polymeric layers arranged along at least a portion of a thickness of the optical film. Each polymeric layer has an average thickness less than about 300 nm. The plurality of polymeric layers includes a first polymeric layer having a largest average thickness among the plurality of polymeric layers, and a second polymeric ...