Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9739097 | Polycrystalline diamond compact cutters with conic shaped end | Youhe Zhang, Yuelin Shen, Jibin Shi | 2017-08-22 |
| 9683410 | Cutter assemblies, downhole tools incorporating such cutter assemblies and methods of making such downhole tools | Youhe Zhang, Yuelin Shen, Gregory T. Lockwood | 2017-06-20 |
| 9605486 | Rolling cutter with close loop retaining ring | Jibin Shi, Chen Chen, Youhe Zhang | 2017-03-28 |