ALEXANDRIA, Va., June 16 -- United States Patent no. 12,306,425, issued on May 20, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Polarizer film" was invented by Carl A. Stover (St. Paul, Minn.), Kristopher J. Derks (Woodbury, Minn.), Stephen A. Johnson (Woodbury, Minn.) and Benjamin J. Forsythe (Stillwater, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Multi-layer optical films that can be utilized as polarizer or mirror films and can be incorporated into optical stacks. The optical film includes a plurality of alternating polymeric first and second interference layers numbering greater than 50 and disposed between, and integrally formed with, first and second skin layers, each of t...