Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11125021 | Customized drilling tools | Youhe Zhang, Huimin Song | 2021-09-21 |
| 11098532 | Cutting elements having non-planar surfaces and tools incorporating the same | Anjie Dong, Gerard Johnson, Michael G. Azar, Huimin Song, Youhe Zhang +1 more | 2021-08-24 |
| 11091960 | Placement of non-planar cutting elements | Youhe Zhang, Huimin Song | 2021-08-17 |
| 10907415 | Multiple ridge cutting element | Huimin Song, Jason Ray Gregg, Sandeep Tammineni | 2021-02-02 |