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. 28, 2003
Filed:
Mar. 02, 2001
Applicant:
Inventor:
Gerard Francis McLean, Victoria, CA;
Assignee:
Ballard Power Systems Inc., Burnaby, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/00 ; H01M 8/02 ;
U.S. Cl.
CPC ...
H01M 2/00 ; H01M 8/02 ;
Abstract
A separator plate for use in a fuel cell stack has a fuel gas flow field adjacent one surface and an oxidant gas flow field adjacent the other surface. The fuel cells in the stack are proton exchange membrane fuel cells having undulate membrane electrode assemblies. The flowpaths of the flow fields comprise parallel flow channels that extend longitudinally and interconnected at their ends to the separator plates. The couplings for the oxidant gas flow channels are offset from those for the fuel flow channels. The interconnecting couplings may be formed by stamping, machining or molding the separator plate.