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:
May. 06, 2014
Filed:
Sep. 04, 2009
Tamotsu Tano, Yamaguchi, JP;
Takashi Oyama, Yamaguchi, JP;
Toshiyuki Oda, Yamaguchi, JP;
Ippei Fujinaga, Yamaguchi, JP;
Hiromitsu Hashisaka, Yamaguchi, JP;
Tamotsu Tano, Yamaguchi, JP;
Takashi Oyama, Yamaguchi, JP;
Toshiyuki Oda, Yamaguchi, JP;
Ippei Fujinaga, Yamaguchi, JP;
Hiromitsu Hashisaka, Yamaguchi, JP;
JX Nippon Oil & Energy Corporation, Tokyo, JP;
Abstract
The invention provides a stock oil composition for needle coke for a graphite electrode, the stock oil composition having a 10 vol % distillation temperature of 280° C. or higher as the distillation property, and when separated into the aromatic component and non-aromatic component by elution chromatography, having an aromatic component content of 30-80 wt % with respect to the total weight of the stock oil composition and an aromatic component molecular weight of 255-1300, as well as a non-aromatic component normal paraffin content of at least 5 parts by weight with respect to 100 parts by weight of the aromatic component.