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:
Aug. 03, 2010
Filed:
Feb. 18, 2005
Koji Abe, Ube, JP;
Kazuhiro Miyoshi, Ube, JP;
Yasufumi Takahashi, Kobe, JP;
Hiroyuki Fujimoto, Kobe, JP;
Akira Kinoshita, Kobe, JP;
Shingo Tode, Kobe, JP;
Ikuro Nakane, Kobe, JP;
Shin Fujitani, Kobe, JP;
Koji Abe, Ube, JP;
Kazuhiro Miyoshi, Ube, JP;
Yasufumi Takahashi, Kobe, JP;
Hiroyuki Fujimoto, Kobe, JP;
Akira Kinoshita, Kobe, JP;
Shingo Tode, Kobe, JP;
Ikuro Nakane, Kobe, JP;
Shin Fujitani, Kobe, JP;
Ube Industries Ltd., Ube, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A nonaqueous electrolyte secondary battery including a negative electrode containing a graphite material as the negative active material, a positive electrode containing lithium cobalt oxide as a main component of the positive active material and a nonaqueous electrolyte solution, the battery being characterized in that the lithium cobalt oxide contains a group IVA element and a group IIA element of the periodic table, the nonaqueous electrolyte solution contains 0.2-1.5% by weight of a sulfonyl-containing compound and preferably further contains 0.5-4% by weight of vinylene carbonate.