Issued Patents 2016
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9482056 | Solid PCD cutter | Ronald K. Eyre, John Daniel Belnap, Youhe Zhang, Yuelin Shen, Jibin Shi | 2016-11-01 |
| 9464486 | Rolling cutter with bottom support | Youhe Zhang, Chen Chen, Jibin Shi | 2016-10-11 |
| 9464490 | Gage cutter protection for drilling bits | Youhe Zhang, Michael G. Azar, Chen Chen | 2016-10-11 |
| 9328564 | Cutting elements retained within sleeves | Youhe Zhang, Jibin Shi, Chen Chen | 2016-05-03 |
| 9322219 | Rolling cutter using pin, ball or extrusion on the bit body as attachment methods | Youhe Zhang, Yuelin Shen | 2016-04-26 |
| 9291000 | Rolling cutter with improved rolling efficiency | Youhe Zhang, Yuelin Shen, Kjell Haugvaldstad | 2016-03-22 |
| 9284790 | Innovative cutting element and cutting structure using same | Youhe Zhang, Jibin Shi | 2016-03-15 |