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:
Apr. 29, 2003
Filed:
Mar. 28, 2001
Applicant:
Inventors:
Kohei Goto, Ibaraki, JP;
Yoshitaka Yamakawa, Ibaraki, JP;
Mayumi Kakuta, Ibaraki, JP;
Igor Rozhanskii, Ibaraki, JP;
Assignee:
JSR Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/36 ; C08G 6/538 ;
U.S. Cl.
CPC ...
C08F 8/36 ; C08G 6/538 ;
Abstract
A polyarylene copolymer which comprises (A) from 60 to 3 mol % aromatic compound units having a main chain containing one or more electron-withdrawing groups therein and (B) from 40 to 97 mol % aromatic compound units having a main chain containing no electron-withdrawing groups therein (provided that (A)+(B)=100 mol %), and a proton-conductive membrane comprising the polyarylene copolymer having sulfonic acid groups.