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:
Jun. 03, 2008
Filed:
Mar. 09, 2005
Toshihiro Otsuki, Tokyo, JP;
Nagayuki Kanaoka, Wako, JP;
Masaru Iguchi, Wako, JP;
Naoki Mitsuta, Wako, JP;
Hiroshi Soma, Wako, JP;
Toshihiro Otsuki, Tokyo, JP;
Nagayuki Kanaoka, Wako, JP;
Masaru Iguchi, Wako, JP;
Naoki Mitsuta, Wako, JP;
Hiroshi Soma, Wako, JP;
JSR Corporation, Tokyo, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A solid polymer electrolyte includes a polymer having a sulfonic group and shows high proton conductivity in a wide range of temperatures and humidities and is excellent in hot water resistance and chemical stability. A proton conductive membrane is composed of the electrolyte. The polymer electrolyte includes a polymer having a structural unit represented by the following formula (1a) or (1b): wherein A is a divalent electron-withdrawing group, B is a divalent electron-donating group or a direct bond, Ar is an aromatic group, Z is an oxygen or a sulfur atom, X is a hydrogen or a fluorine atom, j is an integer of 1 or greater, k is an integer of from 1 to 4, l is an integer of from 0 to 10, m is an integer of from 1 to 10, and n is an integer of from 1 to 8.