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:
May. 13, 2003
Filed:
Nov. 22, 2000
Applicant:
Inventors:
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 6/18 ; H01M 4/58 ;
U.S. Cl.
CPC ...
H01M 6/18 ; H01M 4/58 ;
Abstract
A polymer electrolyte comprising an electrolyte salt, a non-aqueous solvent and a polymer which comprises repeating units of the formulas: —(R —O) —, and —[CH (R )—CH —O] — in which n≧0 and m≧0 provided that n+m≧5, R is a C -C alkyl group, and R is a C -C alkyl group or a benzyl group, and a urea structure.