Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667807 | Thermal granulation process | Ingrid Hurner, Reinhard Walter, Joachim Maasz, Georg Frank | 1997-09-16 |
| 5173466 | Catalyst for the reduction of nitrogen oxides from waste gases and a process for its production | Hans-Hermann Heins, Martin Ullrich, Hanno Henkel, Klaus Holzer, Eberhard Zirngiebl +1 more | 1992-12-22 |
| 4385626 | Speculum for medical examination with a noiseless mechanical locking mechanism | — | 1983-05-31 |