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. 26, 2006
Filed:
Mar. 05, 2004
Applicants:
David A. Summers, Vancouver, CA;
Herwig R. Haas, Vancouver, CA;
Inventors:
David A. Summers, Vancouver, CA;
Herwig R. Haas, Vancouver, CA;
Assignee:
Ballard Power Systems Inc., Burnaby, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/00 (2006.01); H01M 8/10 (2006.01); H01M 8/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fuel cell system is operated with the fuel supply pressure greater than the oxidant supply pressure to the fuel cell. This gives improved performance particularly when the fuel cell system is closed on the fuel side. The magnitude of fuel overpressure may be varied in accordance with variations in the fuel cell operating parameters.