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. 07, 2026
Filed:
Jun. 13, 2023
Ngk Insulators, Ltd., Nagoya, JP;
Yusuke Watanabe, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A gas sensor includes a sensor element and a control unit thereof. The sensor element includes: a base part; a measurement-object gas flow cavity formed from one end part in a longitudinal direction of the base part; a pump cell including an intracavity electrode disposed in the measurement-object gas flow cavity; and a reference electrode disposed in a reference gas chamber formed inside the base part. The control unit includes: a driving control part; a storing part storing in advance, a standard correspondence relationship at a standard time at which a reference potential of the reference electrode is at a predetermined value; and a diagnosing part obtaining a diagnostic correspondence relationship, and comparing the obtained diagnostic correspondence relationship with the standard correspondence relationship to diagnose a deviation of a reference potential of the reference electrode at the diagnostic time from the predetermined value at the standard time.