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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.:

US 10385261 B1

PDFFull Text
Expired
Date of Patent:
Aug. 20, 2019

Filed:

Aug. 22, 2017

Coated particles, methods for their manufacture and for their use as proppants

Applicant:

Covestro Llc, Pittsburgh, PA (US);

Inventors:

Stephen J. Harasin, Morgan, PA (US);

Kenneth R. Riddle, Ambridge, PA (US);

Michael T. Wellman, Moundsville, WV (US);

Assignee:

COVESTRO LLC, Pittsburgh, PA (US);

Attorney:

Donald R. Palladino

Primary Examiner:

Zakiya W Bates

Assistant Examiner:

Crystal J Miller

Int. Cl.
CPC ...
C09K 8/80 (2006.01); E21B 43/267 (2006.01); E21B 43/26 (2006.01); C09D 175/06 (2006.01); C08G 18/76 (2006.01); C09K 8/62 (2006.01); C08G 18/32 (2006.01); C08G 18/42 (2006.01);
U.S. Cl.
CPC ...
C09K 8/805 (2013.01); C09D 175/06 (2013.01); E21B 43/26 (2013.01); E21B 43/267 (2013.01); C08G 18/3237 (2013.01); C08G 18/4288 (2013.01); C08G 18/7664 (2013.01); C09K 8/62 (2013.01);
Abstract

Disclosed are coated particles. The coated particles include substrate particles and a coating disposed over at least a portion of the substrate particles. The coating includes a condensation reaction product of a reaction mixture that includes a liquid isocyanate-functional component and an isocyanate-reactive composition. Also disclosed are methods for making such particles and methods for using such particles as proppants in hydraulic fracturing.

Find Patent Forward Citations

Harasin, Stephen. (2019). Coated particles, methods for their manufacture and for their use as proppants (U.S. Patent No. 10385261). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10385261

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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