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:
Jun. 03, 2014
Filed:
Dec. 25, 2009
Tamotsu Tano, Tokyo, JP;
Takashi Oyama, Tokyo, JP;
Ippei Fujinaga, Tokyo, JP;
Masayuki Tasaki, Tokyo, JP;
Akio Sakamoto, Tokyo, JP;
Tamotsu Tano, Tokyo, JP;
Takashi Oyama, Tokyo, JP;
Ippei Fujinaga, Tokyo, JP;
Masayuki Tasaki, Tokyo, JP;
Akio Sakamoto, Tokyo, JP;
JX Nippon Oil & Energy Corporation, Tokyo, JP;
Abstract
The invention provides a stock oil composition for a carbon material for a negative electrode for a lithium ion secondary battery, having a 10 vol % distillation temperature of 280° C. or higher as the distillation property, a density of at least 0.90 g/cmat a temperature of 15° C. and a normal paraffin content of at least 3 parts by weight with respect to 100 parts by weight as the total weight of the stock oil composition; and having an aromatic component content of 30-85 parts by weight with respect to 100 parts by weight as the total weight of the stock oil composition and an aromatic component molecular weight of 250-1600 when the aromatic components and non-aromatic components are separated by elution chromatography.