ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,576, issued on Aug. 18, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Multilayer optical film" was invented by Kevin T. Huseby (Oakdale, Minn.), Stephen A. Johnson (Woodbury, Minn.), Samuel A. Minno (St. Paul, Minn.), Lin Zhao (Woodbury, Minn.), William T. Fay (Woodbury, Minn.), David T. Yust (Woodbury, Minn.) and Adam D. Haag (Woodbury, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multilayer optical film includes a plurality of optical repeat units which may number less than about 175 in total and which may have a combined average thickness of less than about 20 micrometers. Each of the optical repeat units includes at ...