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.

Date of Patent:
Oct. 10, 2023

Filed:

Dec. 14, 2016
Applicant:

Denso Corporation, Kariya, JP;

Inventors:

Masatoshi Ikeda, Nisshin, JP;

Makoto Ito, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/41 (2006.01); G01N 27/407 (2006.01); G01N 27/416 (2006.01); G01N 27/409 (2006.01); G01N 27/30 (2006.01);
U.S. Cl.
CPC ...
G01N 27/41 (2013.01); G01N 27/30 (2013.01); G01N 27/409 (2013.01); G01N 27/4075 (2013.01); G01N 27/416 (2013.01);
Abstract

A gas sensor element includes a solid electrolyte plate, and a measurement electrode and a reference electrode provided on surfaces of the solid electrolyte plate. In a section plane of the reference electrode along a thickness direction, noble metal regions, solid electrolyte regions, mixed regions, and void spaces are present. When a ratio of an area B of the mixed regions in the section plane with respect to an area A of the reference electrode in the section plane is a mixed region ratio B/A, and a ratio of an area C of the void spaces in the section plane with respect to the area A of the reference electrode in the section plane is a void space ratio C/A, a parameter value as a product of the mixed region ratio B/A and the void space ratio C/A falls within a range of 0.001 to 0.01.


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