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:
Oct. 26, 2004
Filed:
May. 12, 2003
Applicant:
Inventors:
Assignee:
Qinetiq Limited, , GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/10 ;
U.S. Cl.
CPC ...
H01M 8/10 ;
Abstract
A system for the humidification of polymer electrolyte membrane fuel cells, the system comprising a first layer and a second layer; wherein the first layer comprises a porous material ( ) substantially coincident with a first surface of a polymer electrolyte membrane fuel cell ( ); wherein the second layer comprises a non-absorbent material ( ) substantially coincident with the first layer; and wherein perforations in the second layer allow air to flow through the first and second layers to a cathode ( ) of the polymer electrolyte fuel cell.