Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11814944 | Reactive torque automatic balancing device for screw drilling tool, drilling string, and method | Deshuai Zheng, Chengcheng Niu, Xiangyang Zhao, Lingling YU | 2023-11-14 |
| 11541586 | Processing technology for making seepage irrigation pipe with alternate effluent section and non-effluent section | Zhaojun Sun, Jun He, Lei Han, Zhen Wang, Dongdong Han +4 more | 2023-01-03 |
| 10786937 | Processing technology for making seepage irrigation pipe with alternate effluent section and non-effluent section | Zhaojun Sun, Jun He, Lei Han, Zhen Wang, Dongdong Han +4 more | 2020-09-29 |