Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11725459 | Multiple ridge diamond compact for drill bit and drill bit | Qiang Liu, Hong Xu | 2023-08-15 |
| 11391095 | Polycrystalline diamond compact and drilling bit | Hongping Tian, Qiang Liu, Xiaobo Liu | 2022-07-19 |
| 11326402 | Hybrid bit with roller cones having inserts | Qiang Liu, Xiaobo Liu, Shigui Jiang | 2022-05-10 |