Issued Patents 2016
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9482056 | Solid PCD cutter | Ronald K. Eyre, John Daniel Belnap, Youhe Zhang, Jibin Shi, Yuri Burhan | 2016-11-01 |
| 9322219 | Rolling cutter using pin, ball or extrusion on the bit body as attachment methods | Yuri Burhan, Youhe Zhang | 2016-04-26 |
| 9297211 | Polycrystalline diamond construction with controlled gradient metal content | Youhe Zhang, Guodong Zhan | 2016-03-29 |
| 9291000 | Rolling cutter with improved rolling efficiency | Youhe Zhang, Yuri Burhan, Kjell Haugvaldstad | 2016-03-22 |