Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12264292 | Lubricating oil friction modifier and preparation method therefor and application thereof | Hongjun E, Xueling Du, Hu Xin, Ling Lei, Dandan Jiang +2 more | 2025-04-01 |
| 11440982 | Ester polymer, preparation method therefor and use thereof | Songbai Tian, Xiaowei Wang, Qundan Zhang, Hu Li, Xinyu Zhu | 2022-09-13 |
| 11225594 | Drilling fluid for enhancing stratum pressure bearing capacity and preparation method and method of using thereof | Yang Bai, Pingya Luo, Hao Zhang, Yan Cheng, Guojun Li +2 more | 2022-01-18 |
| 11162010 | Nanometer plugging water-based drilling fluid and preparation method and use thereof | Yang Bai, Pingya Luo, Guojun Li, Hao Zhang, Yan Cheng | 2021-11-02 |
| 10989576 | Method and system for obtaining micro-nano level fracture model and evaluating plugging performance of drilling fluid | Yang Bai, Yan Cheng, Pingya Luo, Hongbo Li, Hao Zhang +3 more | 2021-04-27 |
| 10829679 | Micro-nanometer plugging anti-collapse drilling fluid and preparation method and use thereof | Yang Bai, Pingya Luo, Yan Cheng, Guojun Li, Hao Zhang | 2020-11-10 |
| 10829681 | Modified nano-silica plugging agent, water-based drilling fluid, and preparation method and use thereof | Yang Bai, Pingya Luo, Yan Cheng, Hao Zhang, Guojun Li | 2020-11-10 |
| 10816894 | Mask assembly and lithography method using the same | — | 2020-10-27 |
| 10533122 | Strong plugging drilling fluid composition and preparation method thereof, and use thereof | Yang Bai, Guojun Li, Yan Cheng, Hao Zhang, Guancheng Jiang +2 more | 2020-01-14 |