Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1068884 | Polycrystalline diamond compact with a raised parallelogram surface and a groove formed therein | Weifeng Du, Yongfeng Wang, Jian Yang | 2025-04-01 |
| D1057779 | Polycrystalline diamond compact with a raised surface and groove therein | Weifeng Du, Yongfeng Wang, Jian Yang | 2025-01-14 |
| D1057780 | Polycrystalline diamond compact with a tripartite raised surface | Weifeng Du, Yongfeng Wang, Jian Yang | 2025-01-14 |
| D1026980 | Polycrystalline diamond compact with a raised surface and groove therein | Weifeng Du, Yongfeng Wang, Jian Yang | 2024-05-14 |
| D1026981 | Polycrystalline diamond compact with a tripartite raised surface | Weifeng Du, Yongfeng Wang, Jian Yang | 2024-05-14 |
| 11873684 | Polycrystalline diamond compact | Dongpeng Zhao, Weifeng Du, Tongjian NIU, Tengfei WEN, Chunlin Zhang | 2024-01-16 |
| D1006073 | Polycrystalline diamond compact with a raised surface sloping to a peripheral extension | Weifeng Du, Yongfeng Wang, Jian Yang | 2023-11-28 |
| D1006074 | Polycrystalline diamond compact with a raised triangular structure | Weifeng Du, Yongfeng Wang, Jian Yang | 2023-11-28 |
| D997219 | Polycrystalline diamond compact with a double-layer structure | Weifeng Du, Yongfeng Wang, Jian Yang | 2023-08-29 |
| D989826 | Drill bit | Yongfeng Wang, Weifeng Du | 2023-06-20 |
| D989827 | Drill bit | Yongfeng Wang, Weifeng Du | 2023-06-20 |
| D982632 | Drill bit | Yongfeng Wang, Weifeng Du | 2023-04-04 |
| D982631 | Drill bit | Yongfeng Wang, Weifeng Du | 2023-04-04 |
| D982046 | Drill bit | Yongfeng Wang, Weifeng Du | 2023-03-28 |
| 11377910 | Polycrystalline diamond compact | Dongpeng Zhao, Weifeng Du, Shanshan Ma, Tongjian NIU | 2022-07-05 |
| 10865152 | Polycrystalline diamond compact | Caili Wang, Dongpeng Zhao, Saifei Yang | 2020-12-15 |