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:
Sep. 02, 2003
Filed:
Sep. 10, 2001
Applicant:
Inventors:
Alex R. Hobson, Elkton, MD (US);
Stephen J. MacKenzie, Bear, DE (US);
Assignee:
Gore Enterprise Holdings, Newark, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B 1/300 ;
U.S. Cl.
CPC ...
C25B 1/300 ;
Abstract
An integral composite membrane comprised of an expanded polytetrafluoroethylene having a morphological structure comprising a microstructure of very highly elongated nodes interconnected by fibrils is imbibed with ionomer. This composite membrane shows a surprising increase in hardness and thereby reduces electrical shorting and improves fuel cell performance and durabiity.