Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12338325 | Aramid polymerization method using carbon dioxide as solvent | Guoqiang Wen, Quanzhong Zhao, Jianming Shao | 2025-06-24 |
| 10239755 | Method for preparing chlorine gas through catalytic oxidation of hydrogen chloride | Xiongwei Qu, Guohua Li, Quanzhong Zhao, Jianming Shao, Guoqiang Wen | 2019-03-26 |
| 10196340 | Clean process for preparing chloroformyl-substituted benzene | Xiongwei Qu, Guohua Li, Jianming Shao, Quanzhong Zhao, Guoqiang Wen | 2019-02-05 |
| 9556090 | Method for the preparation of trichloromethyl-group-substituted benzene | Xiongwei Qu, Guohua Li, Quanzhong Zhao, Jianming Shao, Guoqiang Wen | 2017-01-31 |
| 9029603 | Process for preparing alkylated p-phenylenediamines | Xiaogen Feng, Xiaohui Mao, Ruibiao Yu, Qianwen Cheng | 2015-05-12 |
| 8686188 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Xiaohui Mao, Ruibiao Yu, Qianwen Cheng, Renping Jiao | 2014-04-01 |
| 8486223 | Falling film evaporator | Xiaogen Feng, Xiaohui Mao, Ruibiao Yu, Qianwen Cheng | 2013-07-16 |
| 8349230 | Spherical rubber chemicals and the method for preparing the same | Xiaohui Mao, Xiaogen Feng, Qianwen Cheng, Luxin Wang | 2013-01-08 |
| 8293673 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Xiaohui Mao, Ruibiao Yu, Qianwen Cheng | 2012-10-23 |
| 8206596 | Magnetic separation apparatus and method for recovery of solid material from solid-liquid mixture | Xiaogen Feng, Xiaohui Mao | 2012-06-26 |
| 8066919 | Spherical rubber chemicals and the method for preparing the same | Xiaohui Mao, Xiaogen Feng, Qianwan Cheng, Luxin Wang | 2011-11-29 |
| 7989662 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Xiaohui Mao, Ruibiao Yu, Qianwen Cheng | 2011-08-02 |
| 7235694 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Xiaohui Mao, Ruibiao Yu, Qianwen Cheng | 2007-06-26 |
| 7176333 | Process for preparing 4-aminodiphenylamine | Ruibiao Yu, Xiaohui Mao, Xiaogen Feng, Qianwen Cheng | 2007-02-13 |
| 7084302 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Xiaohui Mao, Ruibiao Yu, Qianwen Cheng | 2006-08-01 |