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. 14, 1977
Filed:
Oct. 16, 1975
Applicant:
Inventor:
Hisashi Murakami, Tokyo, JA;
Assignee:
Mitsui Coke Co. Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ;
U.S. Cl.
CPC ...
423449 ; 208-8 ; 208 50 ; 423445 ; 423448 ;
Abstract
A process is disclosed for manufacturing needle coke, which process involves the steps of comminuting a coal, dispersing it in a suitable solvent, subjecting the dispersion to hydrogenolysis liquefaction at 360.degree.-480.degree. C and 1-150 Kg/Cm.sup.2 H.sub.2 pressure, distilling the resultant ashless coal solution at 250.degree.-600.degree. C to remove impurities, and unreacted coal, and coking selected distillate fractions in a conventional coker.