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:
Oct. 16, 2001
Filed:
Sep. 22, 1998
Ryuji Inoue, Gifu, JP;
Shoji Kitanoya, Aichi, JP;
Kenji Kato, Aichi, JP;
Tomohiro Fuma, Aichi, JP;
Takafumi Oshima, Aichi, JP;
NGK Spark Plug Co., Ltd., Nogoya, JP;
Abstract
The gas sensor,has the following constituent features: (1) first processing space,: a measurement gas is introduced thereinto via a first gas passage,; (2) second processing space,: a gas contained in the first processing space,is introduced thereinto via a second gas passage,; (3) oxygen concentration detection element,: adapted to measure the oxygen concentration of a gas contained in the first processing space,; (4) oxygen pumping element,: adapted to reduce the oxygen concentration of the measurement gas introduced into the first processing space,within a range such that water vapor contained in the measurement gas is not substantially decomposed; (5) oxidation catalyst section,: adapted to accelerate combustion of a combustible gas component contained in a gas introduced into the second processing space,; and (6) combustible gas component concentration detection element,: a constant voltage is applied thereto, and element,has an output current which varies according to the amount of oxygen consumed by combustion of a combustible gas component contained in the gas introduced into the second processing space,from the first processing space, to thereby provide information regarding the concentration of the combustible gas component of the measurement gas based on the output current.