Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11733121 | Sealing integrity evaluation device for high-temperature and high- pressure casing-cement ring-formation and method thereof | Zhi Zhang, Duo Hou, Huali Zhang, Yufei Li, You Wu +4 more | 2023-08-22 |
| 11583822 | Intermediate gas concentration-regulating piston pressure device for high-temperature autoclave and gas distribution method | Zhi Zhang, Jinming Liu, Huali Zhang, Yufei Li, Jiawei Wang +6 more | 2023-02-21 |