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:
Nov. 18, 1986
Filed:
Aug. 02, 1985
Applicant:
Inventors:
Bert H Clampitt, Katy, TX (US);
Asoke K Deysarkar, Katy, TX (US);
Thomas D Westmoreland, Jr, Conroe, TX (US);
Assignee:
Pennzoil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
208187 ; 208184 ; 208188 ; 208364 ; 208180 ; 203 14 ; 203 73 ; 203 79 ; 252328 ; 252346 ; 252347 ;
Abstract
Middle phase emulsions are broken by subjecting the emulsion to a first atmospheric distillation step to remove water, followed by a second vacuum distillation step to recover oil. The residue contains the surfactant. The atmospheric distillation is generally carried out by steam distillation.