Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9861124 | Alexipharmic cigarette filter material and their preparation | Yonglin Liang, Ran Tao, Xingyi Liang | 2018-01-09 |
| 6832612 | Cigarette filter with scavenging effect on free radicals in cigarette smoke and its preparation method | Peter Rohdewald, Jingnong (Charles) Li | 2004-12-21 |