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:
Feb. 14, 2006
Filed:
Jan. 31, 2003
Masahiro Sekino, Kawasaki, JP;
Asako Sato, Yokohama, JP;
Jun Momma, Yokohama, JP;
Masayuki Oguchi, Yokohama, JP;
Masahiro Sekino, Kawasaki, JP;
Asako Sato, Yokohama, JP;
Jun Momma, Yokohama, JP;
Masayuki Oguchi, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
The present invention provide a nonaqueous electrolyte comprising a nonaqueous solvent, wherein the nonaqueous solvent includes ethylene carbonate (EC), propylene carbonate (PC), γ-butyrolactone (GBL) and a fourth component that is a solvent other than the EC, the PC and the GBL, and the nonaqueous solvent satisfies the following equations (1) to (4): where, the x is a ratio (volume %) of ethylene carbonate to a total volume of the nonaqueous solvent, the y is a ratio (volume %) of propylene carbonate to the total volume of the nonaqueous solvent, the z is a ratio (volume %) of γ-butyrolactone to the total volume of the nonaqueous solvent, and the p is a ratio (volume %) of the fourth component to the total volume of the nonaqueous solvent.