Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12258949 | Two-stroke pumping method and oil production device | Xianzhong Yi, Shifan Zhang, Guangkun Xia, Xinbo Zhao, Yuanhua Zhou +5 more | 2025-03-25 |
| 11851952 | Downhole displacement impact method and impact drilling tool | Xianzhong Yi, Shifan Zhang, Guangkun Xia, Xinbo Zhao, Yanbin Wang +2 more | 2023-12-26 |
| D988468 | Watering can | — | 2023-06-06 |
| D980386 | Watering can | — | 2023-03-07 |