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:
Jul. 13, 1999
Filed:
Dec. 31, 1997
Applicant:
Inventors:
Paul R Hart, The Woodlands, TX (US);
Fu Chen, Newtown, PA (US);
Wen P Liao, Clifton Park, NY (US);
Walter J Burgess, Phoenixville, PA (US);
Assignee:
BetzDearborn Inc., Trevose, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C02F / ;
U.S. Cl.
CPC ...
516176 ; 210708 ; 516169 ; 516180 ;
Abstract
A method of breaking oil-in-water and water-in-oil emulsions in crude oil processing systems in which copolymers incorporating a hydrophilic cationic monomer subunit and a lipophilic nonionic monomer subunit or dispersions or emulsions of cationic polymers and obverse demulsifiers are employed.