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:
Feb. 08, 2011
Filed:
Feb. 22, 2008
Applicant:
Wei Wang, Aberdeen, GB;
Inventor:
Wei Wang, Aberdeen, GB;
Assignee:
M-I L.L.C., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 17/05 (2006.01);
U.S. Cl.
CPC ...
Abstract
Hydroxyl polyester compounds or compositions which are useful as oilfield demulsifiers are prepared through esterifying carboxylic compounds and epoxide compounds under controlled molar ratios. The hydroxyl polyesters are useful as biodegradable demulsifiers on oil productions.