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. 22, 1987
Filed:
Jan. 31, 1986
Phillman N Ho, Yorba Linda, CA (US);
Union Oil Company of California, Los Angeles, CA (US);
Abstract
Hydrocarbon liquids are recovered from oil shale and other solids containing organic material by heating the solids to a temperature below about 900.degree. F., preferably between about 550.degree. F. and about 900.degree. F., in the absence of an added liquid organic solvent and then contacting the heated solids with a liquid organic solvent in such a manner that the solids and solvent do not form a slurry and under conditions such that hydrocarbons are extracted from the heated solids into the organic solvent. The extracted hydrocarbons are then recovered from the solvent by fractionation. Normally, the solids will be heated by contacting them with a hot, nonoxidizing gas, preferably an oxygen-free flue gas generated within the process.