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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 12441920 B1

PDFFull Text
Date of Patent:
Oct. 14, 2025

Filed:

Sep. 20, 2022

Seal rubber composition and sealing member

Applicants:

Koyo Sealing Techno Co., Ltd., Tokushima, JP;

Jtekt Corporation, Kariya, JP;

Inventors:

Katsuhiko Kusunoki, Itano-gun, JP;

Fumiaki Kasahara, Kashiwara, JP;

Assignees:

KOYO SEALING TECHNO CO., LTD., Itano-gun, JP;

JTEKT CORPORATION, Kariya, JP;

Attorney:

Oliff PLC

Primary Examiner:

Katarzyna I Kolb

Int. Cl.
CPC ...
C09K 3/10 (2006.01); C08F 220/06 (2006.01); C08F 220/18 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); C08K 7/14 (2006.01);
U.S. Cl.
CPC ...
C09K 3/1006 (2013.01); C08F 220/06 (2013.01); C08F 220/18 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08K 7/14 (2013.01); C08K 2201/003 (2013.01); C08K 2201/004 (2013.01);
Abstract

A seal rubber composition contains a carboxyl group-containing acrylic rubber, silica, and two or more inorganic fibers, an amount of the silica per 100 parts by weight of the carboxyl group-containing acrylic rubber is 25 to 100 parts by weight, and a total amount of the inorganic fibers per 100 parts by weight of the carboxyl group-containing acrylic rubber is 35 to 100 parts by weight. A sealing member includes a sliding portion composed of a vulcanized product of the seal rubber composition.

Find Patent Forward Citations

Kusunoki, Katsuhiko. (2025). Seal rubber composition and sealing member (U.S. Patent No. 12441920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12441920

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

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