Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11657193 | Mechanics calculation method of drill bit tooth considering rock dynamic strength and mixed crushing mode | Guangjian Dong, Ping Chen, Jianhong Fu | 2023-05-23 |
| 10961784 | Rotating cutter single cone bit | Lian Chen, Zongliang Xie, Haitao Ren, Liyuan Yang | 2021-03-30 |