Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6776168 | Disintegratable cigarette filter | Gunter Maurer, Emmerich Sackers | 2004-08-17 |
| 6207601 | Melt-blown nonwoven fabric, process for producing same and the uses thereof | Gunter Maurer, Paul Rustemeyer | 2001-03-27 |
| 6145511 | Filter cigarette | Wolfgang Sexauer, Rolf Willmund | 2000-11-14 |
| 5733234 | Method and apparatus for producing fiber skeins | Christoph M. Greiner, Thomas Leutner | 1998-03-31 |
| 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 | Rolf Willmund | 1996-03-05 |
| 5460590 | Method and apparatus for producing fiber skeins | Christoph M. Greiner, Thomas Leutner | 1995-10-24 |
| 5427852 | Filter tow and method for its manufacture as well as tobacco smoke filter element and method for its manufacture | Rolf Willmund | 1995-06-27 |
| 4809717 | Ventilated cigarette | Dieter Imbery | 1989-03-07 |