Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10005946 | High-temperature cross-linking deep-well drilling fluid and preparation method thereof | Yang Bai, Pingya Luo, Dachuan Liang | 2018-06-26 |
| 9926482 | Deep-well polysulfonate drilling fluid and preparation method thereof | Yang Bai, Pingya Luo, Dachuan Liang | 2018-03-27 |