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:
Aug. 21, 2001
Filed:
Dec. 15, 1998
Applicant:
Inventors:
Katsuhiko Naoi, Tokyo, JP;
Shunzou Suematsu, Tokyo, JP;
Ari Manago, Tokyo, JP;
Junko Kurihara, Tokyo, JP;
Toshihiko Nishiyama, Tokyo, JP;
Gaku Harada, Tokyo, JP;
Shinako Okada, Tokyo, JP;
Koji Sakata, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/60 ;
U.S. Cl.
CPC ...
H01M 4/60 ;
Abstract
A polymer composed of structural units having a fused ring structure derived from a nitrogen-containing cyclic compound and a quinone compound as represented by the following formula is used as an electrode material for use in batteries. This makes it possible to provide batteries having excellent cycle characteristics and a high power density.