Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7867998 | Method of making antitussive medicine and relieving cough | Pui-Hay Paul But, Yan Xu, Pang-Chui Shaw, Ren Wang Jiang | 2011-01-11 |
| 6992078 | Plant extracts and alkaloids having antitussive activity | Ge-Yi Lin, Hoi Chung, Hui Dong, Paul Pui-Hay But | 2006-01-31 |