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:
Jun. 15, 2010
Filed:
Mar. 24, 2006
Applicants:
Mark Gerrit Roelofs, Hockessin, DE (US);
Zhen-yu Yang, Hockessin, DE (US);
Amy Qi Han, Legal Representative, Hockessin, DE (US);
Inventors:
Mark Gerrit Roelofs, Hockessin, DE (US);
Zhen-Yu Yang, Hockessin, DE (US);
Amy Qi Han, legal representative, Hockessin, DE (US);
Assignee:
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J 5/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fluorinated ion exchange polymer is prepared by grafting at least one grafting monomer derived from trifluorostyrene on to at least one base polymer in a organic solvent/water mixture. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.