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. 21, 2010
Filed:
Dec. 20, 2005
Atsushi Watakabe, Yokohama, JP;
Satoru Hommura, Yokohama, JP;
Seigo Kotera, Yokohama, JP;
Susumu Saito, Yokohama, JP;
Koichi Murata, Yokohama, JP;
Masanori Sawaguchi, Yokohama, JP;
Taiki Hoshino, Yokohama, JP;
Junichi Tayanagi, Yokohama, JP;
Eiji Endoh, Yokohama, JP;
Atsushi Watakabe, Yokohama, JP;
Satoru Hommura, Yokohama, JP;
Seigo Kotera, Yokohama, JP;
Susumu Saito, Yokohama, JP;
Koichi Murata, Yokohama, JP;
Masanori Sawaguchi, Yokohama, JP;
Taiki Hoshino, Yokohama, JP;
Junichi Tayanagi, Yokohama, JP;
Eiji Endoh, Yokohama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
An electrolyte material for polymer electrolyte fuel cells, which is made of a polymer containing repeating units based on a fluoromonomer having a radical polymerization reactivity, wherein the repeating units contain a 5-membered ring (which may contain 1 or 2 oxygen atoms), of which at least one carbon atom is contained in the main chain of the polymer, and an ionic group such as a sulfonic acid group which is bonded to the 5-membered ring directly or via a perfluoroalkylene group having a linear or branched structure; and the polymer has a softening temperature of at least 120° C.