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. 06, 2009
Filed:
Mar. 16, 2005
Nawalage Florence Cooray, Kawasaki, JP;
Fumio Takei, Kawasaki, JP;
Norio Sawatari, Kawasaki, JP;
Masao Tomoi, Yokohama, JP;
Nawalage Florence Cooray, Kawasaki, JP;
Fumio Takei, Kawasaki, JP;
Norio Sawatari, Kawasaki, JP;
Masao Tomoi, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A solid electrolyte membrane for solid polymer fuel cells, or the like is provided that is chemically stable in a strong acid atmosphere, and has low methanol cross-over as well as high proton conductivity. The solid electrolyte membrane is manufactured, using an electrolyte composition comprising a sulfonic acid group-containing polymer having a specific triazine structure. This polymer can be synthesized, for example, from a sulfonic acid group-containing dihydroxy compound having a triazine structure, and a difluoride.