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:
Jan. 28, 2014
Filed:
Mar. 25, 2011
Atsushi Watanabe, Nagoya, JP;
Atsushi Watanabe, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A gas sensor element includes a base member comprising a plurality of laminated solid electrolyte layers, and having a space that communicates with the outside of the gas sensor element and allows introduction of the gas to be measured into the gas sensor element, and a porous measurement electrode that is formed on a surface of the space inside the base member, and is covered with a porous measurement electrode protective layer, wherein an average pore size A of the measurement electrode and an average pore size B of the measurement electrode protective layer satisfy the relationship '0.05≦B/A≦0.9', the measurement electrode has an average pore size of 0.5 to 15 μm, and the measurement electrode protective layer has an average pore size of 0.05 to 9 μm, a porosity of 5 to 50%, and a thickness of 10 to 200 μm.