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. 31, 2015
Filed:
Feb. 21, 2012
Masaki Onkawa, Konan, JP;
Shigehiro Otsuka, Gifu, JP;
Seiji Oya, Aichi, JP;
Satoshi Teramoto, Nisshin, JP;
Kuniharu Tanaka, Komaki, JP;
Takeshi Mitsuoka, Konan, JP;
Masaki Onkawa, Konan, JP;
Shigehiro Otsuka, Gifu, JP;
Seiji Oya, Aichi, JP;
Satoshi Teramoto, Nisshin, JP;
Kuniharu Tanaka, Komaki, JP;
Takeshi Mitsuoka, Konan, JP;
NGK Spark Plug Co., Ltd., Aichi-ken, JP;
Abstract
There is provided a gas sensor element for detecting the concentration of a specific gas component in gas under measurement, which includes a plate-shaped element body and a porous protection layer. The element body has, at one end portion thereof, a gas sensing portion formed with a solid electrolyte substrate and a pair of electrodes. The porous protection layer has a porous structure formed of ceramic particles and surrounds at least the circumference of the one end portion of the element body. In the present invention, the porous protection layer has an inner region, an intermediate region and an outer region laminated together in order of mention from the element body toward the outside. The intermediate region has a porosity lower than those of the inner and outer regions. There is also provided a gas sensor with such a gas sensor element.