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:
Aug. 01, 2023
Filed:
Nov. 19, 2019
Applicant:
Covia Solutions Inc., Independence, OH (US);
Inventors:
Gedeng Ruan, Houston, TX (US);
Huaxiang Yang, Sugar Land, TX (US);
Kanth Josyula, Sugar Land, TX (US);
An Thien Nguyen, Sugar Land, TX (US);
Assignee:
Covia Solutions Inc., Independence, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/80 (2006.01);
U.S. Cl.
CPC ...
C09K 8/805 (2013.01);
Abstract
A self-suspending proppant that resists the adverse effects of calcium and other cations on swelling comprises a proppant substrate particle and a gelatinized non-extruder-derived neutral starch coating on the proppant substrate particle.