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:
Nov. 24, 1998
Filed:
Aug. 25, 1995
Applicant:
Inventors:
Mark C Johnson, Phoenix, AZ (US);
David P Wilkinson, North Vancouver, CA;
Charles P Asman, Surrey, CA;
Myles L Bos, Burnaby, CA;
Robert J Potter, Chalkhouse Green, GB;
Assignee:
Ballard Power Systems Inc., Burnaby, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ; C25B / ; C25B / ;
U.S. Cl.
CPC ...
429 30 ; 429 34 ; 429 38 ; 429 39 ; 429 42 ; 204280 ; 204284 ; 2042 / ; 204294 ;
Abstract
In an electrochemical fuel cell, an electrode substrate has an in-plane nonuniform structure. The electrode substrate having an in-plane nonuniform structure enables controlled transport of reactant toward the electrocatalyst layer and controlled transport of reaction product away from the electrocatalyst layer.