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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 12583076 B1

PDFFull Text
Date of Patent:
Mar. 24, 2026

Filed:

Feb. 16, 2021

Adhesive sheet and polishing pad with adhesive sheet

Applicant:

Sekisui Chemical Co., Ltd., Osaka, JP;

Inventors:

Yudai Ogata, Osaka, JP;

Kazuyuki Fukuyama, Shiga, JP;

Tatsuya Kogiso, Shiga, JP;

Assignee:

SEKISUI CHEMICAL CO., LTD., Osaka, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Pegah Parvini

Int. Cl.
CPC ...
B24B 37/22 (2012.01); C09J 7/10 (2018.01); C09J 7/38 (2018.01); C09J 11/08 (2006.01);
U.S. Cl.
CPC ...
B24B 37/22 (2013.01); C09J 7/10 (2018.01); C09J 7/387 (2018.01); C09J 11/08 (2013.01); C09J 2301/208 (2020.08); C09J 2301/408 (2020.08); C09J 2301/414 (2020.08); C09J 2425/00 (2013.01); C09J 2453/00 (2013.01); C09J 2461/00 (2013.01); C09J 2493/00 (2013.01);
Abstract

The present invention aims to provide an adhesive sheet excellent in both shear strength and slurry resistance at high temperature and excellent in removability that enables removal without adhesive residue. The present invention also aims to provide a polishing pad with an adhesive sheet including the adhesive sheet. Provided is an adhesive sheet including at least one adhesive layer, the adhesive layer containing a base polymer, a tackifier resin (T1) having a hydroxy value of less than 20 mgKOH/g, and a tackifier resin (T2) having a hydroxy value of 20 mgKOH/g or more and 120 mgKOH/g or less, the base polymer being a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound, and the adhesive layer containing the tackifier resin (T1) in an amount of 10 parts by weight or more and 60 parts by weight or less relative to 100 parts by weight of the base polymer, and the tackifier resin (T2) in an amount of 1 part by weight or more and 40 parts by weight or less relative to 100 parts by weight of the base polymer.

Find Patent Forward Citations

Ogata, Yudai. (2026). Adhesive sheet and polishing pad with adhesive sheet (U.S. Patent No. 12583076). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12583076

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

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