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:
Oct. 05, 2004
Filed:
Nov. 13, 2001
Tomoki Nobuta, Tokyo, JP;
Toshihiko Nishiyama, Tokyo, JP;
Hiroyuki Kamisuki, Tokyo, JP;
Gaku Harada, Tokyo, JP;
Masato Kurosaki, Tokyo, JP;
Yuuji Nakagawa, Tokyo, JP;
Shinya Yoshida, Tokyo, JP;
Masaya Mitani, Tokyo, JP;
NEC Tokin Corporation, Miyagi, JP;
Abstract
A secondary battery of a proton conductive polymer, wherein a positive electrode and a negative electrode are arranged facing to each other via a separator in an electrolyte and only a proton or a proton of a hydroxyl group in an indole trimer and a &pgr; conjugated polymer, i.e., an active material of electrode in the positive electrode and in the negative electrode participates in a charge/discharge, and a proton concentration is 5 to 40% and an anion concentration is 30 to 60% in the solution, respectively, and the anion concentration is at least higher than the proton concentration.