Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7288223 | Method and apparatus for producing a respiratory filter | Frank Becker, Martin Kurth | 2007-10-30 |
| 6953318 | Volumetric control for blower filter devices | — | 2005-10-11 |
| 6429165 | Polymer-bonded material | Rudolf Nastke, Gerald Rafler, Helmut Remde, Gabriele Stadermann, Jannett Kohls +2 more | 2002-08-06 |
| 6083439 | Polymer-bonded material | Rudolf Nastke, Gerald Rafler, Helmut Remde, Gabriele Stadermann, Jannett Kohls +2 more | 2000-07-04 |