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:
Jan. 09, 1979
Filed:
Nov. 05, 1974
Applicant:
Inventors:
Bernard E Weichman, Houston, TX (US);
John H Knight, Aurora, CO (US);
Assignee:
The Superior Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10B / ;
U.S. Cl.
CPC ...
208 / ;
Abstract
A plurality of hydrocarbon fractions are recovered from hydrocarbon-bearing material such as oil shale in a continuous retort wherein a bed of the material is moved through a heating chamber, the heating being for a time and at a temperature effective to strip increasingly heavier hydrocarbon fractions from the material as it moves through the heating chamber. The hydrocarbon fractions are collected by a plurality of collection means disposed along the path of movement of the bed for recovery of a corresponding plurality of hydrocarbon fractions.