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:
Dec. 30, 2003
Filed:
Aug. 09, 2001
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A carbon monoxide sensor having a fast response performance without leakage of object gas to an exterior atmosphere is presented. The sensor includes: a proton conductive electrolyte film; two electrodes having catalysts and being disposed at opposite sides of the proton conductive electrolyte film; a positive electrode current collector plate, where a gas passage having a gas inlet and outlet is formed, with the gas passage contacting one of electrodes; a negative electrode current collector plate having plural holes contacting the other of the electrodes; a direct-current power source having positive and negative terminals connected to the positive and negative electrode current collector plates, respectively; and a current detecting unit for detecting a current that varies depending on a concentration of carbon monoxide in an object gas, containing hydrogen, flowing in the gas passage.