Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11446744 | Polygonal cutting blade having circular arc-shaped groove in hole and cutting tool | Aisheng JIANG, Shequan Wang, Junbo XUE, Xingdong XIANG | 2022-09-20 |
| 11299942 | Drilling machines and methods thereof | Chong Chen, Yu Tian, Hang Gao, Zhigang Li, Yan Lyu +2 more | 2022-04-12 |
| 11286731 | Pipe racking system | Ying Li, Xiaohu Li, Lin Wang, Xiaowu OU, Qionghua Yang +2 more | 2022-03-29 |