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. 05, 2011
Filed:
Jun. 14, 2006
Applicants:
Charles Svoboda, Katy, TX (US);
Hugh Caffery, Lockport, LA (US);
Li-jein Lee, Sugar Land, TX (US);
Inventors:
Assignee:
M-I L.L.C., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/267 (2006.01); C09K 8/80 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for making a coated substrate that includes treating a proppant with a coating agent, wherein the coating agent comprises at least one of monomeric alpha-hydroxycarboxylic acids, alpha-hydroxycarboxylic acid polymers, and combinations thereof, reacting the treated proppant to form a polymer coated proppant, and recovering the polymer coated proppant is disclosed.