Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8955669 | Vibrating helicoidal transport device | — | 2015-02-17 |
| 5592748 | Heat treatment of solid catalyst or adsorbent particles in the presence of fluid in a vibrating helical coil | Pierre Dufresne, Francois Ackermann | 1997-01-14 |
| 5508243 | Heat treatment of solid catalyst or adsorbent particles in the presence of fluid in a vibrating helical coil | Pierre Dufresne, Francois Ackermann | 1996-04-16 |