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:
Sep. 02, 2003
Filed:
Feb. 26, 2001
Applicant:
Inventors:
Fumio Munakata, Yokohama, JP;
Tatsuhiro Fukuzawa, Kanagawa, JP;
Yasuhiko Ohsawa, Kanagawa, JP;
Yuuji Tanjo, Yokohama, JP;
Takuya Mihara, Kanagawa, JP;
Takashi Kimura, Kanagawa, JP;
Kazuo Sunahara, Kanagawa, JP;
Manabu Suhara, Kanagawa, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 1/024 ;
U.S. Cl.
CPC ...
H01M 1/024 ;
Abstract
A positive electrode active material for a nonaqueous electrolyte secondary battery includes at least a lithium-deficient manganese layered composite oxide represented by the general formula Li1-xMnO2-&dgr;. A lithium deficiency quantity x is in the range of 0.03<x≦0.5. An oxygen nonstoichiometry quantity &dgr; is equal to or smaller than 0.2.