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:
Oct. 18, 2011
Filed:
Nov. 07, 2007
Applicant:
Fusaki Fujibayashi, Yokohama-si, JP;
Inventor:
Fusaki Fujibayashi, Yokohama-si, JP;
Assignee:
Samsung SDI Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/10 (2006.01); C08J 5/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polymer electrolyte membrane for a fuel cell that can maintain a stable performance for a long time, a method of manufacturing the same, and a fuel cell employing the same. The polymer electrolyte membrane includes at least one kind of a basic polymer and an acidic dopant. A dimensional change in the planar direction of the electrolyte membrane between a wet state and a dry state is 5% or less.