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:
Dec. 27, 1983
Filed:
Jan. 19, 1981
Applicant:
Inventors:
Gerhard Wirtz, Frankfurt, DE;
Rainer Maxelon, Raunheim, DE;
Assignee:
Edeleanu Gesellschaft mbH, Frankfurt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 33 ; 208321 ;
Abstract
Recovery of solvent from hydrocarbon oil extract fractions comprising solvent and oil is effected in at least three sequential flash vaporization stages wherein the pressure of the second vaporization stage is at the highest pressure level and the pressure of the third vaporization stage is at a pressure level intermediate the pressure level of the first and second vaporization stages.