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:
Feb. 08, 1983
Filed:
Mar. 16, 1981
Nobuhiro Toda, Aichi, JP;
Masahiko Yamada, Nagoya, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
A method of manufacturing an oxygen sensor composed of oxygen ion transmissible solid electrolyte which is operative to detect an oxygen concentration in exhaust gas delivered from an internal combustion engine for the purpose of controlling a ratio of air to fuel in a mixed gas to be supplied to the combustion engine and which comprises successive steps of adhering to the outer surface of the solid electrolyte an outside electrode having a thickness of at least 0.5.mu. by thin film techniques, heat treating the outside electrode and providing on the outside electrode a number of holes or broken holes whose diameter or width is larger than the thickness of the outside electrode, adhering to the inner surface of the solid electrolyte a porous inside electrode by thin film technique or suspension coating process, and heat treating the inside electrode at a temperature lower than the temperature at which metals constituting the inside electrode begin to be sintered.