US Patent Issued to 3M Innovative Properties on April 8 for "Optical film and optical stack" (Taiwanese, American, Japanese Inventors)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,271,015, issued on April 8, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Optical film and optical stack" was invented by Adam D. Haag (Woodbury, Minn.), Yi-Chen Chen (Zhubei, Taiwan), Tze Yuan Wang (New Taipei, Taiwan), Hiroki Matsuda (Tendo, Japan), Michelle L. Toy (North St. Paul, Minn.), Ryan J. Eismin (St. Paul, Minn.), John F. VanDerlofske III (Minneapolis), David J. McDaniel (Lino Lakes, Minn.) and Matthew B. Johnson (Woodbury, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical film includes a plurality of alternating first and second polymeric layers, such that the first polymeric layers have a smaller average in-...