Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11603751 | Push-pull force control method for horizontal directional drilling machine and horizontal directional drilling machine | Li Zhang, Zhonghai Zhang, Jiguang Zhang, Weixiang Lv, Yonghua Zhang +3 more | 2023-03-14 |
| 11268328 | Double-walled drill pipe and drilling machine | Ming YANG, Weixiang Lv, Lihua HAN, Tao Ma, Feng Cao +1 more | 2022-03-08 |
| 10717492 | Foldable vehicle | Shanggui Wu, Joseph Lin, Luyao Zhuang, Zhaozhi Zhang | 2020-07-21 |
| 10569821 | Foldable vehicle | Shanggui Wu, Joseph Lin, Luyao Zhuang, Zhaozhi Zhang | 2020-02-25 |
| 9605531 | Intelligent test system and method for multi-segment fractured horizontal well | Hong Xin, Tianshou Zhu, Lijun Mu, Wei-Lun Huang, Qingming Gan +3 more | 2017-03-28 |