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:
Mar. 11, 1980
Filed:
Jun. 23, 1978
Applicant:
Inventors:
Richard S Stearns, Malvern, PA (US);
Elmer J Hollstein, Wilmington, DE (US);
Assignee:
Suntech, Inc., Philadelphia, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 / ;
Abstract
Coal and other solid fossil fuels are subjected to supercritical gaseous extraction by heating a mixture of particulate coal and a solvent mixture of tetralin and xylene at supercritical temperature whereby high extractive yield is obtained and the residual solid material is easily separated from the liquid product.