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:
Feb. 24, 2004
Filed:
Mar. 06, 2001
Applicant:
Inventor:
Juichi Arai, Ibaraki-ken, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/58 ; H01M 6/16 ;
U.S. Cl.
CPC ...
H01M 4/58 ; H01M 6/16 ;
Abstract
A lithium secondary battery comprising a negative electrode, a positive electrode, a separator and a non-aqueous liquid electrolyte, the non-aqueous liquid electrolyte having an electrical conductivity of 0.05 mS/cm or more and no such a flash point as specified by JIS-K2265 flash point test and comprising an ion nonconductive solvent and a lithium ion conductive solvent, is non-flammable and safe even at high temperatures.