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.

Date of Patent:
May. 03, 2010

Filed:

Apr. 20, 2006
Applicants:

Michael T Davis, Port Coquitlam, BC, CA;

Francine Berretta, Vancouver, BC, CA;

Siyu YE, Burnaby, BC, CA;

Bien H Chiem, Burnaby, BC, CA;

Goran R Vlajnic, Burnaby, BC, CA;

Bruce Lin, Vancouver, BC, CA;

Inventors:

Michael T Davis, Port Coquitlam, BC, CA;

Francine Berretta, Vancouver, BC, CA;

Siyu Ye, Burnaby, BC, CA;

Bien H Chiem, Burnaby, BC, CA;

Goran R Vlajnic, Burnaby, BC, CA;

Bruce Lin, Vancouver, BC, CA;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/00 (2005.12);
U.S. Cl.
CPC ...
Abstract

Performance in solid polymer electrolyte fuel cells can be improved by varying the characteristics of the ionomer used in the electrode of a membrane electrode assembly. For instance, increasing the ionomer to catalyst ratio can allow for improved performance under drier operating conditions (e.g., when less humidified reactants or higher operating temperatures are used) or when starting up in below freezing conditions.


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