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:
Jun. 23, 2009
Filed:
Mar. 22, 2002
Koji Abe, Ube, JP;
Motoki Yuguchi, Ube, JP;
Yasuo Matsumori, Ube, JP;
Kazuhiro Miyoshi, Ube, JP;
UBE Industries, Ltd., Ube-Shi, Yamaguchi, JP;
Abstract
A non-aqueous electrolytic solution containing a ketone compound having the formula (I): in which each of Rand Ris linear or branched alkyl; and each of R, R, Rand Ris hydrogen or linear or branched alkyl; however, Rand Rcan be combined to form a cycloalkanone ring in conjunction with a propanone skeleton to which Rand Rare connected, and two or more of alkyl of R, alkyl of R, a branched chain of alkyl of R, and a branched chain of alkyl of Rcan be combined to form a cycloalkane ring, or alkyl of Rand alkyl of Rand/or alkyl of Rand alkyl of Rcan be combined to each other to form a cycloalkane ring, is favorably employed for manufacturing a lithium secondary battery that is excellent in the battery performances and cycle performance.