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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.:

US 12643275 B1

PDFFull Text
Date of Patent:
Jun. 02, 2026

Filed:

Sep. 06, 2022

Polymeric film and method of making same

Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventors:

Stephen A. Johnson, Woodbury, MN (US);

William T. Fay, Woodbury, MN (US);

Atheen R. Johnson, Woodbury, MN (US);

Assignee:

3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);

Attorney:

Clifton F. Richardson

Primary Examiner:

Joanna Pleszczynska

Int. Cl.
CPC ...
B32B 3/30 (2006.01); B29C 48/00 (2019.01); B29C 48/21 (2019.01); B29C 48/23 (2019.01); B29C 59/00 (2006.01); B29C 59/02 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B29K 23/00 (2006.01); B29K 67/00 (2006.01); B29K 96/04 (2006.01); B29L 7/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/23 (2019.02); B29C 48/0021 (2019.02); B29C 48/022 (2019.02); B29C 48/21 (2019.02); B29C 59/005 (2013.01); B29C 59/007 (2013.01); B29C 59/02 (2013.01); B29K 2023/12 (2013.01); B29K 2023/14 (2013.01); B29K 2067/003 (2013.01); B29K 2096/04 (2013.01); B29K 2995/0037 (2013.01); B29L 2007/001 (2013.01);
Abstract

A polymeric film has an orthogonal length and width. The polymeric film includes a substrate and a plurality of fins extending away from the substrate and substantially coextensive with the substrate along the length. The fins are arranged across the width. Each fin in at least a majority of the fins includes a first portion extending from the substrate to a tip of the fin opposite the substrate; and a second portion extending from the tip of the fin toward or to the substrate. The second portion is attached to the first portion proximate the tip and separated from the first portion proximate the substrate along at least a portion of the length. The first and second portions have different respective first and second compositions.

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