Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10723929 | Thinner for oil-based drilling fluids | Chun Zhou, Jiancheng Li, Stephanie Yu | 2020-07-28 |
| 10723931 | Thinner for oil-based drilling fluids | Chun Zhou, Fuchen Liu | 2020-07-28 |