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. 20, 1990
Filed:
Mar. 25, 1987
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A gas sensing element having a co-fired laminar structure including an electrochemical cell having a planar solid electrolyte body, and at least two electrodes disposed on the planar solid electrolyte body. The sensing element further includes two generally planar heaters which are formed on opposite sides of the electrochemical cell, respectively, and which are spaced apart from each other in a direction perpendicular to the planar solid electrolyte body, and a generally planar thermosensitive portion formed as an integral part of the laminar structure, for detecting a temperature of the laminar structure in the neighborhood of at least one of the electrodes of the electrochemical cell. The thermosensitive portion may partially define a diffusion chamber into which a measurement gas in an external space is introduced under a predetermined diffusion resistance, so that one of the electrodes is exposed to the introduced measurement gas.