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:
Aug. 25, 2026
Filed:
Mar. 17, 2023
Applicant:
Valqua, Ltd., Tokyo, JP;
Inventors:
Assignee:
VALQUA, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/3284 (2016.01); F16J 15/10 (2006.01); F16J 15/328 (2016.01);
U.S. Cl.
CPC ...
F16J 15/3284 (2013.01); F16J 15/102 (2013.01); F16J 15/108 (2013.01); F16J 15/328 (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 in the annular seal material, the outer layer has a parting line on each of an outer diameter side and an inner diameter side, and in the annular seal material, a thickness of the outer layer in at least a part of a portion where the parting line is present is smaller than a thickness of the outer layer in a portion where the parting line is absent. According to the present invention, provided are an annular seal material having a parting line having improved visibility and a method for manufacturing the same.