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. 26, 2002
Filed:
Dec. 29, 2000
Applicant:
Inventors:
Michael L. Perry, South Glastonbury, CT (US);
Timothy W. Patterson, East Hartford, CT (US);
Assignee:
UTC Fuel Cells, LLC, South Windsor, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/00 ; H01M 8/02 ;
U.S. Cl.
CPC ...
H01M 2/00 ; H01M 8/02 ;
Abstract
A PEM fuel cell oxidant flow field plate ( ) having a substantial portion ( A) of the flow field formed of interdigitated reactant flow channels ( ) includes a humidification zone coextensive with an electrolyte dry-out barrier ( ). Within the humidification zone, the reactant flow channels are flow-through channels ( ), which permits the inlet reactant flow to be sufficiently slow to permit adequate humidification of the inlet reactant gas from adjacent water, such as coolant water flow channels and/or the anode, to avoid electrolyte dry-out.