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:
Mar. 17, 1987
Filed:
Nov. 14, 1985
Applicant:
Inventors:
Jiro Kitagawa, Kasugai, JP;
Shuichiro Oki, Aichi, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427125 ; 4271262 ; 4271263 ; 427422 ; 427423 ; 427427 ;
Abstract
A process of manufacturing an oxygen sensor having an oxygen sensing element which includes an oxygen-ion conductive solid electrolyte body, a plurality of electrodes on the solid electrolyte body, and a porous ceramic protective layer which covers the electrode disposed on the side of a measurement gas, to protect the electrode from direct exposure to the measurement gas. The process comprises a step of heat-treating at least a portion of the ceramic protective layer covering the electrode, in a reducing atmosphere. The heat-treatment improves an operating response of the sensor over the entire range of temperature of the measurement gas.