Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11908121 | Conveying manipulator for machining precision parts | Zhengying Shi, Weike Xin, Liewei Wang, Jie Lian, Youqun Huang +5 more | 2024-02-20 |
| 9828806 | Roller bit for rock breaking by rotary cutting | Liang Zhang, Jialin Tian, Defa Zeng | 2017-11-28 |
| 9562398 | Modular cutting-teeth drill bit with controllable drilling specific pressure | Liang Zhang, Jialin Tian, Defa Zeng | 2017-02-07 |