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:
May. 03, 2022
Filed:
Jan. 29, 2019
Nitto Denko Corporation, Ibaraki, JP;
Itsuhiro Hatanaka, Ibaraki, JP;
Masahito Niwa, Ibaraki, JP;
Taiki Shimokuri, Ibaraki, JP;
Shou Takarada, Ibaraki, JP;
Takahiro Nonaka, Ibaraki, JP;
Keisuke Hirano, Ibaraki, JP;
Fumika Kawatake, Ibaraki, JP;
Mika Ikemura, Ibaraki, JP;
NITTO DENKO CORPORATION, Ibaraki, JP;
Abstract
The pressure sensitive adhesive sheet is a sheet shaped pressure sensitive adhesive including an acryl-based base polymer. The acryl-based base polymer contains an acryl-based segment and a urethane-based segment, and a content of the urethane-based segment is 3 to 30 parts by weight based on 100 parts by weight of the acryl-based segment. The urethane-based segment includes at least one urethane chain selected from the group consisting of a polyether urethane and a polyester urethane. The content of the urethane-based segment other than the polyether urethane-based segment is 15 parts by weight or less based on 100 parts by weight of the acryl-based segment.