Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5732718 | Selective filtration device | Annmarie Veronica Douglas, Robert G. Geer | 1998-03-31 |
| 5672306 | Method of making an adsorbent fibrous nonwoven composite structure | Troy Alan Sprang, Annmarie Veronica Douglas | 1997-09-30 |
| 5571604 | Adsorbent fibrous nonwoven composite structure | Troy Alan Sprang, Annmarie Veronica Douglas | 1996-11-05 |
| 5170807 | Method of producing a non-burning outer wrapper for use with smoking products | Loyd G. Kasbo, Peter E. Brighenti, William F. Cartwright, Carmen P. DiGrigoli | 1992-12-15 |