Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378461 | Methods of forming organophilic fluid loss materials, and related organophilic fluid loss materials and methods | Evgeny Borisovich Barmatov | 2025-08-05 |
| 12365824 | Polymeric amidoamine emulsifiers | Stephen Cliffe, Reda Karoum | 2025-07-22 |
| 12359109 | Surfactant package for direct emulsion drilling fluid | Lynn Michelle Foster, Jeremy Smith | 2025-07-15 |
| 12247155 | Additives to temporarily reduce viscosities in oil-based fluids | — | 2025-03-11 |
| 11952324 | Amidoamine synthesis, methods to track the reaction process | Yiyan Chen, Albert Okhrimenko | 2024-04-09 |
| 11884871 | Polymeric rheology modifiers | Yiyan Chen, Stephen Cliffe, Reda Karoum | 2024-01-30 |
| 11879088 | Additives to temporarily reduce viscosities in oil-based fluids | — | 2024-01-23 |
| 11827838 | Polymeric amidoamine emulsifiers | Stephen Cliffe, Reda Karoum | 2023-11-28 |
| 11814570 | Amide emulsifier for high-temperature oil-based drilling fluid | Evgeny Borisovich Barmatov | 2023-11-14 |
| 11708518 | Additive to improve cold temperature properties in oil-based fluids | Reda Karoum, Stephen Cliffe | 2023-07-25 |
| 11708519 | Additive to improve cold temperature properties in oil-based fluids | Lynn Michelle Foster, Daria Khvostichenko | 2023-07-25 |
| 11584876 | Additive to improve cold temperature properties in oil-based fluids | Reda Karoum, Stephen Cliffe | 2023-02-21 |
| 11555138 | Fluids and methods for mitigating sag and extending emulsion stability | Stephen Cliffe, Steven Young, Chemsseddine Bouguetta | 2023-01-17 |
| 11414586 | Branched acid emulsifier compositions and methods of use | Yiyan Chen | 2022-08-16 |
| 11377579 | Alkyl cyclic anhydride based emulsifiers for oil based mud | Yiyan Chen, Reda Karoum | 2022-07-05 |
| 11066591 | Effective pour point depressants for amidoamine emulsifiers | Yiyan Chen | 2021-07-20 |
| 11028308 | Invert emulsifiers from DCPD copolymers and their derivatives for drilling applications | Yiyan Chen, Glynda A. Addicks | 2021-06-08 |
| 10570325 | Branched acid emulsifier compositions and methods of use | Yiyan Chen | 2020-02-25 |