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:
Sep. 04, 1984
Filed:
Jun. 20, 1983
Applicant:
Inventors:
George D Case, Morgantown, WV (US);
Alfred H Stiller, Morgantown, WV (US);
Paul J Bekowies, Morgantown, WV (US);
Anthony G Panson, Morgantown, WV (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 / ; 208 / ; 208 / ; 208 / ;
Abstract
Subdivided coal, oil shale or tar sands is extracted under non-thermally destructive conditions with a solvent liquid containing a compound having the general formula: ##STR1## where R, R.sub.1, and R.sub.2 are each hydrogen atoms, lower alkyl (C.sub.1 -C.sub.4) groups, or phenyl groups; provided that the compound has a decomposition temperature higher than the temperature of the extraction, and the extraction temperature is below the softening or decomposition temperature of the material being extracted.