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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 12410343 B1

PDFFull Text
Date of Patent:
Sep. 09, 2025

Filed:

Feb. 01, 2021

Pressure-sensitive adhesive sheet

Applicant:

Nitto Denko Corporation, Ibaraki, JP;

Inventors:

Masataka Nishiwaki, Ibaraki, JP;

Kazuki Minoura, Ibaraki, JP;

Yasushi Buzojima, Ibaraki, JP;

Assignee:

NITTO DENKO CORPORATION, Osaka, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Frank D Ducheneaux

Int. Cl.
CPC ...
C09J 7/38 (2018.01); B32B 37/12 (2006.01); C08K 3/22 (2006.01); C08K 5/00 (2006.01); C08K 5/01 (2006.01); C09J 11/04 (2006.01); C09J 133/08 (2006.01);
U.S. Cl.
CPC ...
C09J 7/385 (2018.01); B32B 37/12 (2013.01); C08K 5/0041 (2013.01); C08K 5/01 (2013.01); C09J 11/04 (2013.01); C09J 133/08 (2013.01); B32B 2264/1024 (2020.08); B32B 2264/301 (2020.08); B32B 2264/503 (2020.08); B32B 2307/4026 (2013.01); C08K 2003/2244 (2013.01); C08K 2201/003 (2013.01); C09J 2203/326 (2013.01); C09J 2301/302 (2020.08); C09J 2301/312 (2020.08); C09J 2301/408 (2020.08); C09J 2433/00 (2013.01);
Abstract

Provided is a PSA sheet having limited light transmission, an increased refractive index and good adhesive properties. The PSA sheet provided by this invention has a PSA layer. The PSA sheet has a total light transmittance below 80%. The PSA layer has a first face and a second face on the opposite side to the first face. The PSA layer comprises high-refractive-index particles. In the PSA layer, the high-refractive-index particles are concentrated in a range that extends from the first face towards the second face side and has a thickness of at least 100 nm, accounting for less than 50% of the PSA layer thickness.

Find Patent Forward Citations

Nishiwaki, Masataka. (2025). Pressure-sensitive adhesive sheet (U.S. Patent No. 12410343). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12410343

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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