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. 13, 2011
Filed:
Jun. 14, 2003
Gordon Calundann, North Plainfield, NJ (US);
Michael J. Sansone, Berkeley Heights, NJ (US);
Oemer Uensal, Mainz, DE;
Joachim Kiefer, Losheim am See, DE;
Gordon Calundann, North Plainfield, NJ (US);
Michael J. Sansone, Berkeley Heights, NJ (US);
Oemer Uensal, Mainz, DE;
Joachim Kiefer, Losheim am See, DE;
BASF Fuel Cell GmbH, Frankfurt, DE;
Abstract
The present invention relates to a novel proton-conducting polymer membrane based on aromatic polyazoles which contain sulfonic acid groups and in which the sulfonic acid groups are covalently bound to the aromatic ring of the polymer and which can, owing to their excellent chemical and thermal properties, be used for a variety of purposes. Such materials are particularly useful for the production of polymer electrolyte membranes (PEMs) in PEM fuel cells.