Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11834387 | Quaternary ammonium salt and preparation method and use thereof as inhibitor, and water-based drilling fluid and use thereof | Mingbiao Xu, Fuchang You, Shusheng Zhou | 2023-12-05 |
| 11787893 | Polyaspartic acid derivative and preparation method and use thereof as lubricant, and water-based drilling fluid and use thereof | Fuchang You, Mingbiao Xu, Shusheng Zhou | 2023-10-17 |