Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11105158 | Drill bit and method using cutter with shaped channels | Christopher John Keller | 2021-08-31 |
| D911399 | Innermost cutter for a fixed-cutter drill bit | — | 2021-02-23 |
| 10899625 | Purifying diamond powder | Qi Liang | 2021-01-26 |