Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9029603 | Process for preparing alkylated p-phenylenediamines | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Qianwen Cheng | 2015-05-12 |
| 8686188 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Qianwen Cheng, Renping Jiao | 2014-04-01 |
| 8486223 | Falling film evaporator | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Qianwen Cheng | 2013-07-16 |
| 8293673 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Qianwen Cheng | 2012-10-23 |
| 7989662 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Qianwen Cheng | 2011-08-02 |
| 7235694 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Qianwen Cheng | 2007-06-26 |
| 7176333 | Process for preparing 4-aminodiphenylamine | Nongyue Wang, Xiaohui Mao, Xiaogen Feng, Qianwen Cheng | 2007-02-13 |
| 7084302 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Qianwen Cheng | 2006-08-01 |