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. 07, 2006
Filed:
Oct. 17, 2003
Applicants:
Sivakumar Muthuswamy, Tower Lakes, IL (US);
Steven D. Pratt, Fort Lauderdale, FL (US);
Ronald J. Kelley, Plantation, FL (US);
Gene Kim, Alpharetta, GA (US);
Inventors:
Sivakumar Muthuswamy, Tower Lakes, IL (US);
Steven D. Pratt, Fort Lauderdale, FL (US);
Ronald J. Kelley, Plantation, FL (US);
Gene Kim, Alpharetta, GA (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/86 (2006.01); H01M 8/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fuel cell () includes a membrane electrode assembly () located together with a layer of variable porosity porous gas diffusion material (). The variable porosity gas diffusion material layer () operates to selectively limit the amount of reactants reaching localized areas of the membrane electrode assembly () in order to reduce hot spots.