Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11359036 | Amine-based polymer, a preparation process thereof and use thereof | Jianrong Zhang | 2022-06-14 |
| 10968313 | Amine polymer and preparation method and use thereof | Xin Cheng, Jianrong Zhang, Qinghua Duan | 2021-04-06 |
| 9593290 | Lubricating oil composition and production thereof | Shihao Xin, Xin-Ying Xie, Qinghua Duan, Zhiqiang Wu, Lihua Wang | 2017-03-14 |
| 9587198 | Mannich base, production and use thereof | Shihao Xin, Qinghua Duan | 2017-03-07 |