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. 07, 2006
Filed:
Mar. 01, 2000
Alexander Dyck, Geesthacht, DE;
Thomas Soczka-guth, Schelklingen, DE;
Alexander Dyck, Geesthacht, DE;
Thomas Soczka-Guth, Schelklingen, DE;
PEMEAS GmbH, , DE;
Abstract
A sulfonated aromatic polymer comprising the repeating structural unit of the formula I—O—Ar(SOR)—C(CF)—Ar(SOR)—O—Ar—(X—Ar)—,   (I)in which Arand Arare, independently of one another, divalent aromatic or heteroaromatic radicals which are optionally substituted by one or more monovalent organic groups which are inert under the conditions of use, R is hydrogen, an alkali metal or alkaline earth metal ion or an ammonium ion, n is an integer from 0 to 3, m is 0, 1 or 2 and X is a —CO—, —O—, —CH—, —CF— or —S— group, in which p is an integer from 1 to 10, is described. Membranes with high proton conductivities can be produced from this polymer and are preferably used in fuel cells.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile