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:
Mar. 02, 2004
Filed:
Dec. 19, 2001
Applicant:
Inventors:
Jiujun Zhang, Richmond, CA;
Kevin M. Colbow, North Vancouver, CA;
Alfred Wong, Vancouver, CA;
Bruce Lin, Vancouver, CA;
Assignee:
Ballard Power Systems Inc., Burnaby, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/500 ; G01N 3/322 ; H01M 8/00 ; H01M 8/04 ;
U.S. Cl.
CPC ...
G01N 2/500 ; G01N 3/322 ; H01M 8/00 ; H01M 8/04 ;
Abstract
In an operating liquid feed fuel cell system, fuel concentration in the fuel stream can be calculated as a function of the observed current, the temperature of the fuel stream entering the fuel cell stack, and the temperature of the fuel cell stack itself, thereby eliminating the need for a separate sensor. Typically, methanol will be used as the fuel and the liquid feed fuel cell system will thus be a direct methanol fuel cell system.