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:
May. 11, 2010
Filed:
Jul. 21, 2005
Takayoshi Atsumi, Kounan, JP;
Hiroshi Isomura, Nagoya, JP;
Keita Nakagawa, Kakamigahara, JP;
Toru Furuichi, Kounan, JP;
Takao Kojima, Nagoya, JP;
Takayoshi Atsumi, Kounan, JP;
Hiroshi Isomura, Nagoya, JP;
Keita Nakagawa, Kakamigahara, JP;
Toru Furuichi, Kounan, JP;
Takao Kojima, Nagoya, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A gas sensor having a gas sensor element which includes: a reference electrode; a solid electrolyte layer having oxygen ion conductivity; a detection electrode; and an electrode-protecting layer covering the detection electrode. The electrode-protecting layer is a porous body carrying catalytic metal, and includes: a detection electrode side portion having a catalytic metal loading ratio of more than 0% by weight and not more than 0.005% by weight; and a surface side portion provided closer to the outer surface of the electrode-protecting layer than the detection electrode side portion, the surface side portion having a catalytic metal loading ratio of 0.01% by weight or more.