Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8038800 | Method and device for cleaning the door of a coke oven | Hans-Josef Giertz, Friedrich Huhn, Jürgen George, Ralf Hoven, Detlef Mattern +3 more | 2011-10-18 |
| 7176341 | Method and devices for producing naphthalene from coke produced from coke oven crude gas | Hans-Josef Giertz, Horst Schroder | 2007-02-13 |
| 7067043 | Coke oven door with gas channel | Hans-Josef Giertz, Franz Liesewitz, Friedrich-Wilhelm Cyris | 2006-06-27 |