The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2026
Filed:
Nov. 23, 2022
3m Innovative Properties Company, St. Paul, MN (US);
Kristopher J. Derks, Woodbury, MN (US);
David J. Mcdaniel, Lino Lakes, MN (US);
Kevin T. Huseby, Oakdale, MN (US);
Stephen A. Johnson, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An optical film includes a plurality of polymeric microlayers disposed between, and co-extruded and co-stretched with, opposing first and second polymeric skins. Each of the polymeric microlayers has an average thickness of less than about 400 nm. Each of the first and second polymeric skins has an average thickness of greater than about 1 micron. At least one of the first and second polymeric skins includes a plurality of polymeric skin layers. Each of the polymeric skin layers has an average thickness of greater than about 0.5 microns. The plurality of polymeric skin layers includes a polymeric second skin layer disposed between polymeric first and third skin layers. The polymeric second skin layer includes one or more of a greater degree of crystallinity, a greater glass transition temperature, a greater modulus, and a greater in-plane birefringence than each of the polymeric first and third skin layers.