Issued Patents 2019
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10508229 | Crosslinked polymers including sulfonic acid groups or salts or esters thereof as viscosifiers and fluid loss additives for subterranean treatment | Hui Zhou, Jay Paul Deville | 2019-12-17 |
| 10501675 | Fluid loss additive for water based drilling fluids with improved thermal stability | Hui Zhou | 2019-12-10 |
| 10407526 | Crosslinked polymer compositions with two crosslinkers for use in subterranean formation operations | Hui Zhou, Kay Ann Galindo | 2019-09-10 |
| 10336850 | Methods of use for crosslinked polymer compositions in subterranean formation operations | Kay Ann Galindo, Hui Zhou | 2019-07-02 |
| 10273397 | Synthetic crosslinked polymer additive for use in subterranean treatment fluids | Hui Zhou | 2019-04-30 |
| 10179872 | Fluid loss additive for water based drilling fluids with improved thermal stability | Hui Zhou | 2019-01-15 |