Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5944026 | Tobacco products or materials resembling tobacco products containing natural substances having an antioxidative effect and processes for the preparation thereof | Reiner Kopsch, Wolfram Roeper | 1999-08-31 |
| 5617881 | Rod formed smoking product | Peter W. Kossmehl, Edgar Mentzel, Henning Seidel, Hans Noe | 1997-04-08 |
| 5423336 | Ventilated filter cigarette | Edgar Mentzel, Henning Seidel | 1995-06-13 |
| 4945932 | Cigarette which goes out rapidly or is self-extinguishing | Edgar Mentzel | 1990-08-07 |
| 4593707 | Variably ventilated filter cigarette | Henning Seidel, Joachim Mantke | 1986-06-10 |