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:
Sep. 13, 2005
Filed:
Mar. 10, 2003
Masahiro Takehara, Ibaraki, JP;
Takashi Fujii, Ibaraki, JP;
Minoru Kotato, Ibaraki, JP;
Daisuke Noda, Ibaraki, JP;
Shinichi Kinoshita, Ibaraki, JP;
Makoto Ue, Ibaraki, JP;
Hitoshi Suzuki, Ibaraki, JP;
Masahiro Takehara, Ibaraki, JP;
Takashi Fujii, Ibaraki, JP;
Minoru Kotato, Ibaraki, JP;
Daisuke Noda, Ibaraki, JP;
Shinichi Kinoshita, Ibaraki, JP;
Makoto Ue, Ibaraki, JP;
Hitoshi Suzuki, Ibaraki, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A nonaqueous electrolyte solution for secondary batteries which is an electrolyte solution for secondary batteries obtained by dissolving a lithium salt in a nonaqueous solvent, wherein the nonaqueous solvent is a solvent mainly comprising a lactone compound and the content of hydroxy carboxylic acids in the electrolyte solution is 1 mmol/kg or lower and a secondary battery employing the same are excellent in high-temperature storage characteristics, cycle characteristics, and capacity retention characteristics and in various cell characteristics in a wide temperature range and safety such as firing properties.