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:
Feb. 17, 2004
Filed:
Mar. 30, 2001
Applicant:
Inventors:
Yoshiaki Higuchi, Kanagawa, JP;
Ichiro Terada, Kanagawa, JP;
Hiroshi Shimoda, Kanagawa, JP;
Satoru Hommura, Kanagawa, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/10 ; H01M 6/18 ; H01M 6/00 ;
U.S. Cl.
CPC ...
H01M 8/10 ; H01M 6/18 ; H01M 6/00 ;
Abstract
A method for producing an electrolyte membrane for a polymer electrolyte fuel cell, which comprises forming into a membrane a mixture of a perfluorocarbon polymer having sulfonic acid groups or their precursors and a fluorocarbon polymer which can be fibrillated, laminating a support membrane for stretching to at least one side of the resulting membrane, and stretching the resulting laminated membrane under heating.