Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10472899 | Cutting tools with rotating elements | Youhe Zhang | 2019-11-12 |
| 10267096 | Drill bit rolling element with retaining ring | Yuri Burhan, Chen Chen, Youhe Zhang | 2019-04-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10472899 | Cutting tools with rotating elements | Youhe Zhang | 2019-11-12 |
| 10267096 | Drill bit rolling element with retaining ring | Yuri Burhan, Chen Chen, Youhe Zhang | 2019-04-23 |