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. 16, 2003
Filed:
Dec. 22, 2000
Applicant:
Inventors:
Zuomin Dong, Victoria, CA;
Ken W. Kratschmar, Victoria, CA;
Dongming Lu, London, CA;
Ryan N. Mackie, Vancouver, CA;
Walter R. Merida Donis, Victoria, CA;
Michael E. Pastula, Duncan, CA;
Martin L. Perry, Calgary, CA;
Gaofeng Gary Wang, Winnipeg, CA;
Rong Zheng, Victoria, CA;
Assignee:
Ballard Power Systems Inc., Burnaby, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/14 ;
U.S. Cl.
CPC ...
H01M 2/14 ;
Abstract
In solid polymer electrolyte fuel cells, a laminar flow of a dilute oxidant stream, for example air, may be disrupted by incorporating obstacles in the channels of an oxidant flow field. The laminar flow is changed to turbulent flow thereby enhancing the flow of oxygen to the membrane electrode assembly in the fuel cell and improving fuel cell performance.