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:
Nov. 15, 2016
Filed:
Aug. 08, 2013
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Hitoshi Furuta, Tajimi, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A gas sensor () which can be an air-fuel ratio sensor includes a detection element () including a pair of electrodes, one of the paired electrodes being a sensing electrode () which is exposed to a gas-to-be-measured, and the other electrode being a reference electrode () which functions as an oxygen reference electrode. In the gas sensor (), the reference electrode () is connected to a porous reference electrode lead () extending along the surface of a solid electrolyte body (); the reference electrode lead () contains a noble metal as a main component and also contains a ceramic material; and the reference electrode lead () has a specific resistance lower than that of the reference electrode (). The ceramic material has, in a sintered state, a mean primary grain size greater than that of the noble metal.