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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 10877191 B1

PDFFull Text
Date of Patent:
Dec. 29, 2020

Filed:

Jun. 29, 2016

Barrier elements on a microstructured article having adhesive sealing layer and specified modulus of elasticity

Applicant:

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

Inventors:

Suman K. Patel, Woodbury, MN (US);

John P. Baetzold, North Saint Paul, MN (US);

Erik A. Aho, New Richmond, WI (US);

Manoj Nirmal, Saint Paul, MN (US);

Mikhail L. Pekurovsky, Bloomington, MN (US);

Scott M. Tapio, Falcon Heights, MN (US);

Denis Terzic, Minnetonka, MN (US);

Assignee:

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

Attorneys:

Carlos M. TĂ©llez Rodriguez

3M Innovative Properties Company

Primary Examiner:

Ryan S Dunning

Int. Cl.
CPC ...
G02B 5/124 (2006.01); C09J 7/24 (2018.01); C09J 7/38 (2018.01); B32B 7/00 (2019.01); B32B 23/20 (2006.01); B32B 3/30 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 27/42 (2006.01); B32B 27/34 (2006.01); B32B 23/08 (2006.01); B32B 27/08 (2006.01); B32B 27/40 (2006.01); B32B 27/10 (2006.01); B32B 7/12 (2006.01);
U.S. Cl.
CPC ...
G02B 5/124 (2013.01); B32B 3/30 (2013.01); B32B 7/00 (2013.01); B32B 7/12 (2013.01); B32B 23/08 (2013.01); B32B 23/20 (2013.01); B32B 27/08 (2013.01); B32B 27/10 (2013.01); B32B 27/28 (2013.01); B32B 27/281 (2013.01); B32B 27/302 (2013.01); B32B 27/304 (2013.01); B32B 27/306 (2013.01); B32B 27/308 (2013.01); B32B 27/32 (2013.01); B32B 27/322 (2013.01); B32B 27/325 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 27/365 (2013.01); B32B 27/40 (2013.01); B32B 27/42 (2013.01); C09J 7/24 (2018.01); C09J 7/38 (2018.01); B32B 2250/03 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/40 (2013.01); B32B 2307/41 (2013.01); B32B 2307/412 (2013.01); B32B 2307/416 (2013.01); B32B 2307/418 (2013.01); B32B 2437/00 (2013.01); B32B 2451/00 (2013.01); B32B 2590/00 (2013.01); B32B 2605/00 (2013.01); C09J 2301/302 (2020.08); C09J 2433/001 (2013.01);
Abstract

The disclosed light directing article comprises a structured layer, an adhesive sealing layer, and barrier elements. The structured layer comprises multiple microstructured elements that are opposite a major surface. The adhesive sealing layer has a first region and a second region. The second region is in contact with the structured layer. The barrier element are at the first region. The first region with the barrier element and second region have sufficiently different properties to form a low refractive index layer between the adhesive sealing layer and the structured layer. The barrier element comprises a crosslinked polymeric matrix having a modulus of elasticity less than 4.4 GPa.

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