Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10793729 | Organoclay compositions having quaternary ammonium ion having one or more branched alkyl substituents | Wouter Ijdo, David Dino, Yanhui CHEN | 2020-10-06 |
| 10662365 | Oil based drilling fluids useful having reduced change in high shear viscosity over a wide temperature range | David Dino, Gabriela Barbara Ber, Wouter Ijdo, Jeffrey Thompson | 2020-05-26 |