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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 12768447 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Mar. 17, 2023

Annular seal material and manufacturing method

Applicant:

Valqua, Ltd., Tokyo, JP;

Inventors:

Naoki Osumi, Gojo, JP;

Tomomitsu Mochizuki, Gojo, JP;

Assignee:

VALQUA, LTD., Tokyo, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Nicholas L Foster

Int. Cl.
CPC ...
F16J 15/10 (2006.01); B29C 65/00 (2006.01); B29C 65/20 (2006.01); B29L 31/26 (2006.01); F16J 15/328 (2016.01);
U.S. Cl.
CPC ...
F16J 15/108 (2013.01); B29C 65/20 (2013.01); B29C 66/1142 (2013.01); B29C 66/73752 (2013.01); F16J 15/102 (2013.01); F16J 15/104 (2013.01); F16J 15/328 (2013.01); B29L 2031/26 (2013.01);
Abstract

The present invention relates to an annular seal material comprising a core and an outer layer covering a periphery of the core, wherein the outer layer has a thick film portion and a non-thick film portion in a cross section in a circumferential direction. According to the present invention, provided are an annular seal material that is constituted of a core and an outer layer and that suppresses cracking in the outer layer and protrusion of the core from the outer layer, and a method for manufacturing the same.

Find Patent Forward Citations

Osumi, Naoki. (2026). Annular seal material and manufacturing method (U.S. Patent No. 12768447). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12768447

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

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