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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 12461444 B1

PDFFull Text
Date of Patent:
Nov. 04, 2025

Filed:

Jan. 04, 2021

Sulfonium salt, photoacid generator, curable composition, and resist composition

Applicant:

San-apro Ltd., Kyoto, JP;

Inventors:

Takuto Nakao, Kyoto, JP;

Yuji Nakamura, Kyoto, JP;

Assignee:

SAN-APRO LTD., Kyoto, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Mark F Huff

Assistant Examiner:

Kevin J Drummey

Int. Cl.
CPC ...
G03F 7/004 (2006.01); C07C 309/06 (2006.01); C07C 381/12 (2006.01); C07F 7/18 (2006.01); G03F 7/038 (2006.01); G03F 7/039 (2006.01);
U.S. Cl.
CPC ...
G03F 7/0045 (2013.01); C07C 309/06 (2013.01); C07C 381/12 (2013.01); C07F 7/1804 (2013.01); G03F 7/0382 (2013.01); G03F 7/0392 (2013.01);
Abstract

Provided are: a new sulfonium salt highly photosensitive to active energy ray, in particular, i-line or h-line; and a new photoacid generator which is highly photosensitive to i-line or h-line, and comprises a sulfonium salt that is highly soluble in a solvent and a cationically polymerizable compound such as an epoxy compound, and has excellent storage stability in the formulation. The present invention pertains to a sulfonium salt represented by general formula (1), and a photoacid generator comprising said sulfonium salt.

Find Patent Forward Citations

Nakao, Takuto. (2025). Sulfonium salt, photoacid generator, curable composition, and resist composition (U.S. Patent No. 12461444). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12461444

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

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