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:
Jan. 02, 2007
Filed:
Dec. 03, 2002
Yasumichi Hotta, Mie-pref., JP;
Namitsugu Fujii, Yokkaichi, JP;
Xin Fu, Legal Representative, Suita, JP;
Yasumichi Hotta, Mie-pref., JP;
Namitsugu Fujii, Yokkaichi, JP;
Xin Fu, legal representative, Suita, JP;
Denso Corporation, Kariya, JP;
Abstract
The present invention provides a gas sensor element and its production method, in which poisons are trapped in a porous protective layer to prevent them from reaching a measured gas side electrode, thereby making it possible to maintain a stable sensor output over a long period of time. The gas sensor element of the present invention is composed of a solid electrolyte, and a measured gas side electrodethat contacts a measured gas and a reference gas side electrodethat contacts a reference gas provided on said solid electrolyte; wherein, the above measured gas side electrodeis covered with a porous protective layercomposed of a heat-resistant metal oxide containing a getter, and the above getter is an alkaline silicate.