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:
Aug. 13, 2013
Filed:
Oct. 12, 2010
Mika Murakami, Nagoya, JP;
Hiroki Fujita, Kasugai, JP;
Sumiko Horisaka, Nagoya, JP;
Takashi Ito, Kasugai, JP;
Sang Jae Lee, Ama-Gun, JP;
Mika Murakami, Nagoya, JP;
Hiroki Fujita, Kasugai, JP;
Sumiko Horisaka, Nagoya, JP;
Takashi Ito, Kasugai, JP;
Sang Jae Lee, Ama-Gun, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A gas sensor includes an internal space, diffusion control part, pumping cell, and measuring cell. The diffusion control part communicates with the internal space and has a slit-like shape with a smaller thickness than that of the internal space. The pumping cell pumps out oxygen from the internal space when voltage is applied between a first electrode fowled on a surface of the internal space and a second electrode formed outside the internal space. The measuring cell measures a current flowing between a third and fourth electrodes when a voltage is applied between the third and fourth electrodes. The third electrode is formed in the diffusion control part, and can reduce an oxide gas component in a predetermined gas component to which a predetermined diffusion resistance has been applied by the diffusion control part. The fourth electrode is formed in a part different from the diffusion control part.