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. 23, 2016
Filed:
Jul. 12, 2013
Applicant:
Denso Corporation, Kariya, Aichi-pref., JP;
Inventor:
Yasushi Kawashima, Mie-ken, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P 15/00 (2006.01); H01T 13/08 (2006.01);
U.S. Cl.
CPC ...
F02P 15/00 (2013.01); H01T 13/08 (2013.01); Y10S 277/941 (2013.01);
Abstract
A gasket for attaching a spark plug to an internal combustion engine, the gasket having an annular portion. The annular portion is annular to surround the spark plug, and has contact surfaces on both axial ends, one of the contact surfaces being to contact the spark plug, the other being to contact the internal combustion engine. The annular portion is composed of copper alloy containing aluminum oxide. The aluminum oxide content of the copper alloy is 0.3 wt % or more, and 0.7 wt % or less.