Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11814339 | Method for preparing isocyanate in gaseous phase | Weiqi Hua, Tonghe Li, Yonghua Shang, Jingxu Wang, Jinping HAN +5 more | 2023-11-14 |
| 9802848 | Method for treating waste saline water produced in production process of diphenylmethane diisocyanate (MDI) | Hongke Zhang, Weiqi Hua, Xiaogao Liu, Zhenhua Zhao, Jiansheng Ding +5 more | 2017-10-31 |
| 7893301 | Method of preparing polymethylene-polyphenyl-polyamine | Jiansheng Ding, Jianfeng Chen, Hongke Zhang, Haikui Zou, Weiqi Hua +3 more | 2011-02-22 |