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:
Dec. 26, 2006
Filed:
Mar. 17, 2003
Applicants:
Yuqi Cai, Kingston, CA;
Divya Chopra, Kingston, CA;
John C. Fisher, Kingston, CA;
Inventors:
Assignee:
E. I. duPont Canada Company, Mississauga, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/02 (2006.01); B29C 71/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a process for decreasing the resistivity of a non-machined conductive flow field plate for use in a fuel cell. The process includes the step of annealing the conductive flow field plate by heating the conductive flow field plate to a temperature between 25° C. (room temperature) and a temperature slightly lower than the material softening temperature of the material composition of the conductive flow field plate; maintaining the conductive flow field plate at that temperature for an effective period of time; and, cooling the conductive flow field plate to room temperature.