Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11053743 | Polycrystalline diamond compact drill bit and oil well drilling apparatus having the same | Jianghe Luo, Runan Zhang, Lei Wen | 2021-07-06 |
| 10975628 | Drill bit nozzle and drill bit | Yuehua Xu, Jiaqing Yu, Jianghe Luo, Runan Zhang | 2021-04-13 |