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. 17, 2012
Filed:
Sep. 05, 2008
Koji Shiono, Aichi, JP;
Kunio Imai, Gifu, JP;
Koji Shiono, Aichi, JP;
Kunio Imai, Gifu, JP;
NGK Spark Plug Co., Ltd., , JP;
Abstract
To provide a gas sensor element having a base body whose durability is unlikely to deteriorate during the use and exhibiting excellent endurance and responsiveness. [Means for Solution] A gas sensor elementcomprising: a closed-bottomed cylindrical base bodymade of solid electrolyte which contains zirconia as a principal component; an outer electrodeformed on an outer surface of the base body; an inner electrodeformed on an inner surface of the base body; and an adhesive layerformed between the base bodyand the outer electrodeand containing zirconia as a principal component, wherein a proportion of tetragonal in zirconia particles of the base bodyfalls within the range from 45% or more to 60% or less and, wherein a proportion of tetragonal in zirconia particles of the adhesive layeris greater than that of tetragonal in zirconia particles of the base body