Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5173466 | Catalyst for the reduction of nitrogen oxides from waste gases and a process for its production | Peter Danz, Martin Ullrich, Hanno Henkel, Klaus Holzer, Eberhard Zirngiebl +1 more | 1992-12-22 |
| 4910005 | Process for the reduction of nitrogen oxides from exhaust gases | Siegfried Gruhl, Klaus Holzer, Michael Bueb | 1990-03-20 |
| 4465655 | Process for the purification of exhaust gases containing sulfuryl fluoride | Klaus Geisler, Helmut Coulon, Reiner Kriwalski | 1984-08-14 |