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. 09, 2025
Filed:
Jul. 30, 2020
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Martin Johan Olof Widenbrant, Stillwater, MN (US);
Jeffrey O. Emslander, Grant, MN (US);
Kevin T. Huseby, Oakdale, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 7/06 (2019.01); B29C 48/00 (2019.01); B29C 48/21 (2019.01); B32B 7/12 (2006.01); B29K 23/00 (2006.01); B29K 67/00 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B32B 7/06 (2013.01); B32B 7/12 (2013.01); B29C 48/0018 (2019.02); B29C 48/21 (2019.02); B29K 2023/0625 (2013.01); B29K 2023/065 (2013.01); B29K 2023/083 (2013.01); B29K 2067/003 (2013.01); B29K 2067/046 (2013.01); B29K 2105/0097 (2013.01);
Abstract
A multilayer film having a backing with an integrally formed polymeric liner, made in a common coextrusion process. The polymeric liner has material properties deemed to make it incompatible with the backing material, resulting in two layers that resist separation during manufacture and transportation but are hand separable in field applications and installation.