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. 30, 1989
Filed:
Dec. 18, 1987
Fujio Ishiguro, Nagoya, JP;
Takumi Narahara, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
A method of producing an oxygen sensing element including a main body made of an oxygen-ion conductive solid electrolyte, an undulated layer formed on the main body, a measuring electrode formed on the undulated layer for exposure to a measurement gas, and a porous protective coating which covers the measuring electrode. A solid electrolyte material having a higher degree of sinterability than the oxygen-ion conductive solid electrolyte of the main body of the sensing element is prepared, to form an unfired layer for the undulated layer on a selected portion of an unfired body for the main body. The formed unfired layer for the undulated layer is fired together with the unfired body for the main body, under firing conditions selected for the unfired body, whereby the undulated layer is formed as an integral part of the main body of the sensing element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile