Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8841110 | Animal product free system and process for purifying a botulinum toxin | Hui Xiang, Ping Wang, Stephen Donovan | 2014-09-23 |
| 8409828 | Animal product free system and process for purifying a botulinum toxin | Hui Xiang, Ping Wang, Stephen Donovan | 2013-04-02 |
| 7452697 | Chromatographic method and system for purifying a botulinum toxin | Hui Xiang, Yao Yu, Stephen Donovan | 2008-11-18 |
| 7354740 | Animal product free system and process for purifying a botulinum toxin | Hui Xiang, Ping Wang, Stephen Donovan | 2008-04-08 |