Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11946334 | Flow splitting device for gas reverse circulation drilling | Chuanwei Zhao, Zhonghua WU, Yanjun Zhou, Honglin Tang, Xueliang PEI +7 more | 2024-04-02 |
| 11774220 | Annular shaped-charge housing for blasting and method of using the same | Fujiao Chu, Wentao Lan, Gongcheng Li, Zimin Ma | 2023-10-03 |