Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6365119 | Method of operating a catalytic converter | Gunther Spitznagel | 2002-04-02 |
| 6054408 | Catalyst for reducing the nitrogen oxide concentration in a flowing medium and method for producing the catalyst | Erich Hums, Gunther Spitznagel, Peter Fischer, Ronald Neufert | 2000-04-25 |
| 5820832 | Plate-type catalytic converter | Josef-Konrad Beer, Heimo Friede, Hendrik Lammers | 1998-10-13 |
| 5749651 | Combined feed and mixing device | Wolfgang Herr, Josef Sprehe, Horst Spielmann | 1998-05-12 |
| 5275230 | Regenerative preheater and method for operating the same | Lothar Balling | 1994-01-04 |