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, 2017
Filed:
Jan. 03, 2014
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Manish Sinha, Pittsford, NY (US);
Derek R. Lebzelter, Conneaut, OH (US);
John C. Fagley, Houston, TX (US);
Megan J. Quick, Seattle, WA (US);
Rodney J. Rhodes, Davisburg, MI (US);
Sergio E. Garcia, Commerce Township, MI (US);
Victor W. Logan, Naples, NY (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/04 (2016.01); H01M 8/04537 (2016.01); G01R 31/36 (2006.01);
U.S. Cl.
CPC ...
H01M 8/04634 (2013.01); G01R 31/3662 (2013.01); H01M 8/04 (2013.01);
Abstract
A method for determining membrane humidification by determining the membrane protonic resistance of a fuel cell stack at humidified conditions, and normalizing the base resistance of the fuel cell stack against the base resistance of a reference fuel cell stack.