Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9029603 | Process for preparing alkylated p-phenylenediamines | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Ruibiao Yu | 2015-05-12 |
| 8686188 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Ruibiao Yu, Renping Jiao | 2014-04-01 |
| 8486223 | Falling film evaporator | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Ruibiao Yu | 2013-07-16 |
| 8349230 | Spherical rubber chemicals and the method for preparing the same | Nongyue Wang, Xiaohui Mao, Xiaogen Feng, Luxin Wang | 2013-01-08 |
| 8293673 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Ruibiao Yu | 2012-10-23 |
| 7989662 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Ruibiao Yu | 2011-08-02 |
| 7235694 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Ruibiao Yu | 2007-06-26 |
| 7176333 | Process for preparing 4-aminodiphenylamine | Nongyue Wang, Ruibiao Yu, Xiaohui Mao, Xiaogen Feng | 2007-02-13 |
| 7084302 | Process for preparing 4-aminodiphenylamine | Xiaogen Feng, Nongyue Wang, Xiaohui Mao, Ruibiao Yu | 2006-08-01 |