Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6145511 | Filter cigarette | Eberhard Teufel, Wolfgang Sexauer | 2000-11-14 |
| 5495860 | Structures formed from cellulose acetate, use thereof for the manufacture of filter tow, use of the filter tow for the manufacture of a tobacco smoke filter element, as well as a filter tow and a tobacco filter element | Eberhard Teufel | 1996-03-05 |
| 5462801 | Filter Tow, method for the production thereof, as well as tobacco smoke filter element and method for its production | — | 1995-10-31 |
| 5427852 | Filter tow and method for its manufacture as well as tobacco smoke filter element and method for its manufacture | Eberhard Teufel | 1995-06-27 |