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:
Apr. 03, 2012
Filed:
Jun. 11, 2008
Tadahiro Ohmi, Sendai, JP;
Yasuyuki Shirai, Sendai, JP;
Yasushi Aburatani, Gojo, JP;
Akira Muramatsu, Machida, JP;
Masayuki Noguchi, Tokyo, JP;
Kouji Sato, Gojo, JP;
Satoshi Kumaki, Gojo, JP;
Tadahiro Ohmi, Sendai, JP;
Yasuyuki Shirai, Sendai, JP;
Yasushi Aburatani, Gojo, JP;
Akira Muramatsu, Machida, JP;
Masayuki Noguchi, Tokyo, JP;
Kouji Sato, Gojo, JP;
Satoshi Kumaki, Gojo, JP;
Tohoku University, Sendai-shi, JP;
Nippon Valqua Industries, Ltd., Tokyo, JP;
Abstract
A low-compression force metal gasket includes a coating layer containing a polymer material on at least a sealing surface of the gasket, and the coating layer satisfies the following conditions (1) to (3): (1) the layer comprises a resin, a rubber or a mixture thereof having an oxygen gas permeability coefficient at 25° C. of 10×10to 0.1×10(m/s); (2) when the layer is compression deformed, the storage elastic modulus (E') at 200° C. is in the range of 1.0×10to 1.0×10Pa; and (3) the coating layer has a thickness of 1 to 40 μm. The gasket provides a high seal at a low clamping force.