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:
Feb. 08, 2005
Filed:
Dec. 15, 2000
Michael Reindl, Markdorf, DE;
Thomas Roesch, Dornstadt, DE;
Ralf Erich Moos, Friedrichschafen, DE;
Thomas Alfred Birkhofer, Immenstad, DE;
Wilhelm Mueller, Salem-Buggensegel, DE;
Ralf Wolfgang Mueller, Aulendorf, DE;
Michael Reindl, Markdorf, DE;
Thomas Roesch, Dornstadt, DE;
Ralf Erich Moos, Friedrichschafen, DE;
Thomas Alfred Birkhofer, Immenstad, DE;
Wilhelm Mueller, Salem-Buggensegel, DE;
Ralf Wolfgang Mueller, Aulendorf, DE;
Ballard Power Systems Inc., Burnaby, CA;
Abstract
A fuel cell assembly has an improved gas sensor. The improved sensor measures the gas concentrations in the interior fluid passages within a fuel cell assembly or within fluid passages employed to transport reactant fluid streams to or from the fuel cell(s). The improved sensor is particularly suited for use in the environment within the reactant fluid passages of a solid polymer fuel cell assembly and is tolerant to the presence of water. The sensor employs an active electrode; a passive electrode; and an electrolyte in contact with both electrodes. The electrolyte is disposed on a substrate and a heater is located in thermal contact with the substrate for heating the substrate and the electrolyte.