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. 12, 2016
Filed:
Feb. 10, 2011
Shinako Kaneko, Sagamihara, JP;
Hitoshi Ishikawa, Sagamihara, JP;
Yoko Hashizume, Sagamihara, JP;
Eiji Suzuki, Sagamihara, JP;
Shinako Kaneko, Sagamihara, JP;
Hitoshi Ishikawa, Sagamihara, JP;
Yoko Hashizume, Sagamihara, JP;
Eiji Suzuki, Sagamihara, JP;
NEC ENERGY DEVICES, LTD., Kanagawa, JP;
Abstract
The exemplary embodiment has an object to provide a nonaqueous electrolyte solution having a flame retardancy over a long period and having a good capacity maintenance rate. The exemplary embodiment is a nonaqueous electrolyte solution containing a lithium salt, at least one oxo-acid ester derivative of phosphorus selected from compounds represented by a predetermined formula, and at least one disulfonate ester selected from a cyclic disulfonate ester and a linear disulfonate ester represented by the predetermined formulae.