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:
Nov. 29, 2022
Filed:
Oct. 18, 2019
Applicant:
Nitto Denko Corporation, Ibaraki, JP;
Inventors:
Ryo Morioka, Ibaraki, JP;
Masataka Nishiwaki, Ibaraki, JP;
Toshiki Ikami, Ibaraki, JP;
Yasushi Buzojima, Ibaraki, JP;
Assignee:
NITTO DENKO CORPORATION, Ibaraki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 7/38 (2018.01); C09J 7/40 (2018.01); C08K 3/04 (2006.01); B32B 7/12 (2006.01);
U.S. Cl.
CPC ...
C09J 7/385 (2018.01); B32B 7/12 (2013.01); C08K 3/04 (2013.01); B32B 2457/20 (2013.01); C08K 2201/005 (2013.01); C09J 2203/326 (2013.01);
Abstract
The invention provides a PSA sheet having a PSA layer exhibiting superior light shielding. Provided is a PSA sheet comprising a PSA layer that includes a PSA polymer. Carbon black particles are dispersed in the PSA layer. The average particle size of the carbon black particles dispersed in the PSA layer is 300 nm or smaller. The average particle size is an average particle size determined on the basis of a number-based particle size distribution by TEM observation.