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:
Jun. 30, 2020
Filed:
Nov. 28, 2017
Applicant:
Preferred Technology, Llc, Radnor, PA (US);
Inventors:
Spyridon Monastiriotis, Houston, TX (US);
Yu-Chin Li, Houston, TX (US);
Assignee:
PREFFERRED TECHNOLOGY, LLC, Radnor, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/80 (2006.01); C09D 175/04 (2006.01); E21B 43/267 (2006.01); E21B 43/25 (2006.01); E21B 43/16 (2006.01); C08G 18/42 (2006.01); C09D 175/08 (2006.01); C08G 18/76 (2006.01); C09D 175/06 (2006.01); C08G 18/44 (2006.01);
U.S. Cl.
CPC ...
C09K 8/805 (2013.01); C08G 18/4236 (2013.01); C08G 18/44 (2013.01); C08G 18/7671 (2013.01); C09D 175/04 (2013.01); C09D 175/06 (2013.01); C09D 175/08 (2013.01);
Abstract
Coatings and compositions for coating particulates are described that can be used as, for example, as proppants to, for example, extract oil and gas from subterranean formations. The coatings can be, for example, an inner coating adjacent to the particulate comprising a polyurethane and an outer coating comprising an polyurethane dispersion; a coating comprising a polyurethane admixed with a polyurethane dispersion; or a polyurethane dispersion layer and is free of an inner polyurethane layer.