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:
Apr. 19, 2005
Filed:
Aug. 13, 2001
Toshikazu Hamamoto, Yamaguchi, JP;
Koji Abe, Yamaguchi, JP;
Yoshihiro Ushigoe, Yamaguchi, JP;
Yasuo Matsumori, Yamagauchi, JP;
Toshikazu Hamamoto, Yamaguchi, JP;
Koji Abe, Yamaguchi, JP;
Yoshihiro Ushigoe, Yamaguchi, JP;
Yasuo Matsumori, Yamagauchi, JP;
Ube Industries, Ltd., , JP;
Abstract
A nonaqueous electrolytic solution for lithium secondary batteries. When the nonaqueous solvent comprises a combination of an ester of a tertiary carboxylic acid and a cyclic carbonate such as propylene carbonate or ethylene carbonate, a lithium salt having a fluorine atom is preferably used as the electrolyte salt. In this case, the ester of a tertiary carboxylic acid is preferably used in a relatively small amount, especially in an amount of about 0.5 to 35 wt. % based on the nonaqueous solvent.