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. 29, 2009
Filed:
Sep. 22, 2006
Volker Druenert, Russelsheim, DE;
George R. Woody, Redondo Beach, CA (US);
Annette M. Brenner, Honeoye Falls, NY (US);
Volker Druenert, Russelsheim, DE;
George R. Woody, Redondo Beach, CA (US);
Annette M. Brenner, Honeoye Falls, NY (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A bipolar plate for a fuel cell including pores extending between cooling fluid flow channels and reactant gas flow channels defined by the plate. Pervaporation membranes cover the pores and selectively allow water in the cooling fluid flowing down the cooling fluid flow channels to pervaporate through the membrane and humidify the reactant gas flowing down the reactant gas flow channels. In one embodiment, the bipolar plate includes two stamped unipolar plates secured together.