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. 07, 1984
Filed:
Jul. 16, 1981
Applicant:
Inventors:
Jurgen Stadelhofer, Dortmund, DE;
Heinz-Gerhard Franck, Bad Soden-Neuenhain, DE;
Assignee:
Rutgerswerke Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 / ; 208 23 ;
Abstract
A process is described for bringing ground coal or similar carbon-containing raw materials into solution with aromatic solvents under elevated pressure and at elevated temperature. The solvents used are high-aromatic residues obtained from the pyrolysis of petroleum fractions, having an average boiling point of above 380.degree. C., and/or high-aromatic distillates from the pressure/heat treatment of coal tar pitch, having an average boiling point of above 380.degree. C., as well as from 5 to 30% of aromatic products or mixtures of aromatic products, having a boiling point of below 250.degree. C.