Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9745501 | Additive composition suitable for viscosity reduction of oil-based drilling fluid, oil-based drilling fluid and use thereof | Guancheng Jiang, Yinbo He, Zhengqiang Deng, Lili Yang, Fan Liu +8 more | 2017-08-29 |