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:
Dec. 09, 2003
Filed:
Dec. 13, 2000
Applicant:
Inventors:
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/58 ; H01M 6/14 ; H02J 7/00 ;
U.S. Cl.
CPC ...
H01M 4/58 ; H01M 6/14 ; H02J 7/00 ;
Abstract
A lithium secondary battery comprises a negative electrode capable of intercalating/deintercalating lithium ion, a positive electrode made of a lithium-containing metal oxide as an active positive material, and a nonaqueous electrolyte, and a polyvinylidene fluoride resin is disposed between said negative electrode and positive electrode so that the battery voltage doesn't rise beyond a predetermined value even when said battery is overcharged.