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:
Feb. 19, 1980
Filed:
Oct. 24, 1978
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 / ; 208 15 ;
Abstract
An ashless liquid fuel of good quality is produced by mixing powdery coal with a pitch having a C/H ratio of from 0.90 to 1.20 in an amount of at least 50 parts by weight per 100 parts by weight of the powdery coal, subjecting the mixture to a heat treatment conducted at from 400.degree. to 450.degree. C. and thereafter, removing a solid coagulated material formed in the treated product. The pitch having an atomic ratio C/H in the range from 0.90 to 1.20 is obtained by the heat treatment of a residual oil in the distillation of crude oils.