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:
Mar. 24, 2026
Filed:
Feb. 01, 2022
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Kaoru Shibutani, Nagoya, JP;
Ryo Onishi, Nagoya, JP;
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/407 (2006.01); G01M 15/10 (2006.01); G01N 27/406 (2006.01); G01N 27/41 (2006.01);
U.S. Cl.
CPC ...
G01N 27/4072 (2013.01); G01N 27/4067 (2013.01); G01N 27/4074 (2013.01); G01N 27/4077 (2013.01); G01M 15/102 (2013.01); G01N 27/41 (2013.01);
Abstract
Provided is a sensor element for use in measurement of the concentration of a predetermined gas component in a measurement target gas. The sensor element includes a plate-shaped element body and a protective layer. The element body includes a solid electrolyte layer having oxygen ion conductivity and a heater configured to heat the solid electrolyte layer. A protective layer is formed on at least one face of the element body. A surface of the protective layer has a surface roughness Ra of 8 μm or less and a surface waviness Wa of 6 μm or more.