Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11124712 | Method of using high molecular weight aromatic polyol polyesters as demulsifiers for crude oil treatment | Thiago V. Alonso, Callie M. Ayers | 2021-09-21 |
| 11111431 | Method for reducing the permeability of a subterranean formation to aqueous-based fluids | Sayeed Abbas, Robert E. Hefner, Jr., Shawn J. Maynard, Cesar E. Meza | 2021-09-07 |
| 10876032 | Method for recovering hydrocarbon fluids from a subterranean reservoir using alpha-glycol containing sulfonated epoxy resin compound | Robert E. Hefner, Jr. | 2020-12-29 |
| 9943782 | Cationic vinyl imidazolium-based copolymer for separating an oil-in-water emulsion | M. J. Yanjarappa, Cecile Boyer, Michael K. Poindexter | 2018-04-17 |
| 9758397 | N-vinylpyrrolidone-based cationic copolymer for separating an oil-in-water emulsion | M. J. Yanjarappa, Cecile Boyer, Michael K. Poindexter | 2017-09-12 |
| 9695367 | Stabilized aqueous water clarifier composition and methods of use | Callie M. Ayers | 2017-07-04 |
| 7670649 | Amphiphilic block copolymer-toughened epoxy resins and ambient cure high-solids coatings made therefrom | Kandathil E. Verghese | 2010-03-02 |
| 6710139 | Epoxy or phenolic functional polyester or polyether | Ramki Subramanian, Marcos P. Franca | 2004-03-23 |