Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11519049 | Low temperature resistant oil casing having high strength and high toughness, and manufacturing method thereof | Wen Sun, Zhonghua Zhang | 2022-12-06 |
| 11459643 | High-strength and high-toughness perforating gun tube and manufacturing method therefor | Zhonghua Zhang, Cunyao Zhao | 2022-10-04 |
| 10851432 | Ultra-high strength and ultra-high toughness casing steel, oil casing, and manufacturing method thereof | Zhonghua Zhang, Xiaodong Jin | 2020-12-01 |
| 9172583 | Actively provisioning a managed node | — | 2015-10-27 |