Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10858571 | High-temperature retarder suitable for oil and gas well cementation, preparation method thereof and cementing slurry | Chengwen Wang, Yucheng Xue, Wei Zhou, Ruihe Wang, Jinsheng Sun +1 more | 2020-12-08 |
| 10662772 | Positioner and positioning method for reinforcing steel bars of tunnel side wall | Meng Wang, Cheng WANG | 2020-05-26 |