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. 04, 2007
Filed:
Mar. 21, 2002
Applicants:
Mark J. Andrews, Preston, GB;
John E. Lockley, Lancaster, GB;
Brian Wilson, Lancashire, GB;
Inventors:
Assignee:
Victrex Manufacturing Limited, Thornton Cleveleys, Lancashire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fuel cell powered by direct fuel, for example a direct methanol fuel cell, includes a polymer electrolyte membrane which includes a semi-crystalline polymer. Preferred semi-crystalline polymers include first repeat units comprising sulphonated aromatic group containing moieties linked by —SO— and/or —CO— and/or -Q-groups, where Q is O or S and second repeat units which include aromatic group containing moieties linked by —CO— and/or Q groups.