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:
Jan. 29, 2013
Filed:
Oct. 26, 2007
Ramanathan S. Lalgudi, Westerville, OH (US);
Jeffrey Boyce, Grove City, OH (US);
Jay Sayre, Gahanna, OH (US);
Bhima R. Vijayendran, Dublin, OH (US);
Ramanathan S. Lalgudi, Westerville, OH (US);
Jeffrey Boyce, Grove City, OH (US);
Jay Sayre, Gahanna, OH (US);
Bhima R. Vijayendran, Dublin, OH (US);
Other;
Abstract
An ionically conductive polymer has the chemical structure 1 as shown herein. Examples of the polymer include 4,4'-(4-(1H-benzo[d]imidazol-2-yl)butane-2,2-diyl)diphenol, sulfonated poly(aryl ether sulfone) containing benzimidazole backbone, sulfonated poly(aryl ether sulfone) containing carboxylic acid backbone, and sulfonated poly(aryl ether sulfone) containing benzimidazole backbone from carboxylic acid containing sulfonated poly(aryl ether sulfone). The polymer has intrinsic ion conducting properties so that it is effectively conductive even under low water conditions. In one embodiment, the polymer has an ionic conductivity of at least 1×10S/cm at a temperature of 120° C. when the polymer is substantially anhydrous.