Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12129728 | Downhole blowout preventer and blowout prevention operation method | Lanrong Ma, Lei Gu, Huibo Yin, Xiaozhi Zheng, Yuequan Hou | 2024-10-29 |
| 10927612 | Downhole auxiliary drilling apparatus | Yijin Zeng, Qunai Hu, Chenxi Zhao, Xiaojie Cui, Jianjun Zhao +3 more | 2021-02-23 |