Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12258949 | Two-stroke pumping method and oil production device | Xianzhong Yi, Guangkun Xia, Xinbo Zhao, Jifang Wan, Yuanhua Zhou +5 more | 2025-03-25 |
| 11851952 | Downhole displacement impact method and impact drilling tool | Xianzhong Yi, Guangkun Xia, Xinbo Zhao, Yanbin Wang, Yangchuan Ke +2 more | 2023-12-26 |
| 10919334 | Anti-counterfeiting pattern having optically variable structure and preparation method thereof | Xing Zhang, QINGFEI MENG, Yong Zhang, Xiaoquan Zhou, Guolin Yuan | 2021-02-16 |