Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10645579 | Account login method, apparatus, and system | Ningbo Jiang, Qinglei Feng, Zheng-Yu Jiang, Jiwei Guo, Jie Zhao +3 more | 2020-05-05 |
| 10577891 | Using horizontal directional drilling and liquid nitrogen cyclic freeze-thaw process to improve permeability in gas drainage | Cheng Zhai, Jizhao Xu, Zongqing Tang, Shiliang Wu, Chao Zhong | 2020-03-03 |