Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12226761 | Catalyst for preparing phosgene and preparation method therefor, and method for preparation of phosgene and comprehensive utilization of energy thereof | Chao Dong, Yujie Zhou, Chaoqun Li, Fang Wen, Wenbo Wang +4 more | 2025-02-18 |
| 11000837 | Catalyst for preparing chlorine gas by hydrogen chloride oxidation, and preparation method and application thereof | Hongke Zhang, Bo Zhou, Zhangwei Zai, Dan Xu, Yu Yao +4 more | 2021-05-11 |
| 10046289 | Method for replacement of phosgene synthesis column catalyst | Hongke Zhang, Yu Yao, Guanyi Cao, Xiaogao Liu, Younian Cao +2 more | 2018-08-14 |
| 9840462 | Solvent refining method for isocyanate prepared by phosgene method and devices used in same | Hongke Zhang, Yu Yao, Weiqi Hua, Bin Chen, Dekai Shi +4 more | 2017-12-12 |