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:
Dec. 25, 2007
Filed:
Dec. 12, 2002
Jiro Iriyama, Tokyo, JP;
Yukiko Morioka, Tokyo, JP;
Sigeyuki Iwasa, Tokyo, JP;
Kentaro Nakahara, Tokyo, JP;
Masaharu Satoh, Tokyo, JP;
Masahiro Suguro, Tokyo, JP;
Jiro Iriyama, Tokyo, JP;
Yukiko Morioka, Tokyo, JP;
Sigeyuki Iwasa, Tokyo, JP;
Kentaro Nakahara, Tokyo, JP;
Masaharu Satoh, Tokyo, JP;
Masahiro Suguro, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A battery, which has excellent safety in an overcharged state and is excellent in low-temperature characteristics and cycle characteristics, is provided. The electrolytic solution of the secondary battery contains a compound which has a diazine N,N'-dioxide structure represented by general formula (1). in which, n, m, n′, and m′ each independently are an integer 0 or larger; the diazine rings and the benzene rings may be condensed alternately or randomly; and substituents R, R, R, R, R, R, R, and Reach independently represent hydrogen atom, halogen atom, or specific group. However, when n is 2 or larger, then Rand Rmay be the same or different, and when n′ is 2 or larger, then Rand Rmay be the same or different. In addition, these substituents, in cooperation with each other, may form a ring structure.