US Patent Issued to 3M Innovative Properties on June 17 for "Optical film" (Minnesota Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,332,466, issued on June 17, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Optical film" was invented by Ryan T. Fabick (Shoreview, Minn.), Matthew E. Sousa (Rosemount, Minn.), William B. Black (Eagan, Minn.) and Edward J. Kivel (Stillwater, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical film including a plurality of alternating first and second layers disposed on a skin layer is described. The skin layer has an average thickness greater than about 2 microns. A transmittance of the film for substantially normally incident light includes a band edge separating first and second wavelength ranges, where each range is at l...