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:
Oct. 31, 2017
Filed:
Mar. 30, 2015
Ngk Insulators, Ltd., Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
In a sensor element, a reference gas regulation pump cell pumps in oxygen to the periphery of a reference electrode in which a reference gas is introduced, by the flow of a control current Ipbetween the reference electrode and an outer pump electrode located in a region exposed to a measurement-object gas. An average current density of the reference electrode under the flow of the control current Ipis higher than 0 μA/mmand lower than 400 μA/mm. The average current density is preferably not higher than 170 μA/mm. An average value of the control current Ipis preferably higher than 1 μA. The outer pump electrode as a measurement-object gas side electrode of the reference gas regulation pump cell may be provided on an outer surface of a layered body (or more specifically, on a second solid electrolyte layer).