Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11851952 | Downhole displacement impact method and impact drilling tool | Xianzhong Yi, Shifan Zhang, Guangkun Xia, Xinbo Zhao, Yanbin Wang +2 more | 2023-12-26 |
| 11566156 | Drilling fluid lubricant and preparation method and use thereof | Chengcheng Yu | 2023-01-31 |