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:
Apr. 12, 1994
Filed:
Feb. 07, 1992
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A solid electrolyte is interposed between a first electrode layer located while in contact with the gas to be measured and a second electrode layer located while in contact with a reference gas. The first electrode layer is covered on its high-temperature portion with a first porous protecting layer and on its low-temperature portion with a second porous protecting layer which is lower in gas permeability than the first porous protecting layer. This electrochemical element can be produced without detriment to the porous protecting layers, e.g., causing them to peel off or crack. In addition, it can be used while any lowering of insulating resistance between the first electrode layer and the associated metal holder, thereby providing an accurate detection of the concentration of a specific gas in the gas to be measured.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile