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:
Apr. 02, 1991
Filed:
Nov. 16, 1988
Applicant:
Inventors:
Gotz Koerner, Essen, DE;
Dietmar Schaefer, Essen, DE;
Assignee:
Th. Goldschmidt AG, Essen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
252345 ; 252358 ; 208188 ; 210708 ;
Abstract
To demulsify water-containing crude oil, selected polyoxyalkylene-polysiloxane block copolymers are described. The demulsifiers are used in amounts of less than 200 ppm based on the crude oil.