Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9840462 | Solvent refining method for isocyanate prepared by phosgene method and devices used in same | Yu Yao, Dongke Zhao, Weiqi Hua, Bin Chen, Dekai Shi +4 more | 2017-12-12 |
| 9802848 | Method for treating waste saline water produced in production process of diphenylmethane diisocyanate (MDI) | Weiqi Hua, Xiaogao Liu, Zhenhua Zhao, Shuchang Sun, Jiansheng Ding +5 more | 2017-10-31 |
| 9683078 | Method for preparing branched polycarbonate with continuous two-phase interface phosgene method | Lei Zhang, Zhikun GAO, Zhansen Xiong, Qin Tian, Weiqi Hua | 2017-06-20 |