Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11351665 | Device for measuring equivalent shear stress between shield screw conveyor and modified muck | Xinggao Li | 2022-06-07 |
| 11008496 | Composition for preparing anti-wear lubricant for drilling fluid and preparation method of anti-wear lubricant for drilling fluid and drilling fluid | Mingbiao Xu, Fuchang You, Jiao Wu, Shanshan Hou, Man Shu | 2021-05-18 |