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:
Jul. 07, 2009
Filed:
Oct. 18, 2001
Noboru Oyama, Tokyo, JP;
Yuki Fujimoto, Tokyo, JP;
Yoshiyuki Iwase, Chichibu, JP;
Kouichi Nishijima, Chiba, JP;
Noboru Oyama, Tokyo, JP;
Yuki Fujimoto, Tokyo, JP;
Yoshiyuki Iwase, Chichibu, JP;
Kouichi Nishijima, Chiba, JP;
Du Pont-Mitsui Polychemicals Co. Ltd, Tokyo, JP;
Other;
Abstract
A gel-type polymer electrolyte, wherein said polymer comprises (A) an ethylene-unsaturated carboxylic acid copolymer or a derivative thereof and (B) a polyalkylene oxide having a hydroxyl group at one terminal thereof or a derivative thereof, which are bonded together by an ester bond. The gel-type polymer electrolyte has a high ionic conductivity, and makes it possible to provides a cell which has excellent charge/discharge characteristics at low temperatures as well as at high temperatures.