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:
Aug. 11, 2009
Filed:
Sep. 20, 2004
Applicants:
Matthew H. Frey, Cottage Grove, MN (US);
Steven J. Hamrock, Stillwater, MN (US);
Gregory M. Haugen, Edina, MN (US);
Phat T. Pham, Little Canada, MN (US);
Inventors:
Matthew H. Frey, Cottage Grove, MN (US);
Steven J. Hamrock, Stillwater, MN (US);
Gregory M. Haugen, Edina, MN (US);
Phat T. Pham, Little Canada, MN (US);
Assignee:
3M Innovative Properties Company, Saint Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising bound anionic functional groups and polyvalent cations, such as Mn or Ru cations, which demonstrate increased durability. Methods of making same are also provided.