Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9109706 | Coking drum | — | 2015-08-18 |
| 7624754 | Double-disk slide valve | Norbert Marx, Friedel Heller | 2009-12-01 |
| 7600528 | Double-disk slide valve | Norbert Marx, Friedel Heller | 2009-10-13 |
| 6948930 | Furnace head or furnace throat seal | Franz-Josef Irnich, Friedhelm Paulus | 2005-09-27 |