Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6357507 | Curtain arrangement for preventing spread of smoke | Jochen Stoebich, Stefan Siller, Joachim Luther, Werner Schellenberger, Thomas Wegner +2 more | 2002-03-19 |
| 5862851 | Curtain arrangement for preventing spread of smoke | Jochen Stoebich, Stefan Siller, Joachim Luther, Werner Schellenberger, Thomas Wegener +2 more | 1999-01-26 |
| 4898990 | Process for the extraction of vanillin | Hubert Coenen | 1990-02-06 |