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:
Feb. 10, 2004
Filed:
Mar. 07, 2001
Applicant:
Inventor:
Zbigniew S. Sobolewski, Longmont, CO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D 2/200 ; B32B 9/00 ; B32B 1/08 ; D02G 3/00 ; H01M 8/10 ;
U.S. Cl.
CPC ...
B29D 2/200 ; B32B 9/00 ; B32B 1/08 ; D02G 3/00 ; H01M 8/10 ;
Abstract
The present invention is directed to a diffusion substrate assembly that is suitable for use in fuel cells. The diffusion substrate exhibits low flow resistance for active fuel agents and electrochemical reaction products, high electrical cross plane conductance and a good mechanical integrity. In one embodiment, the diffusion substrate includes carbon micro-studs that are in a substantially parallel relationship to one another and extend substantially perpendicular to a supporting bed.