Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5279993 | Gas injection stone and process of manufacture thereof | Hans Rothfuss, Manfred Winkelmann, Jochen Kopia | 1994-01-18 |
| 5202079 | Means and method for determining the degree of wear of a gas injection device | Manfred Winkelmann, Hans Rothfuss | 1993-04-13 |
| 5160478 | Gas flushing apparatus for metallurgical vessel | Hans Rothfuss, Manfred Winkelman, Hans G. Winkler, Jochen Kopia | 1992-11-03 |
| 5127632 | Gas flushing device including perforated brick and gas flushing stone assembly | Udo Muschner, Manfred Winkelmann, Hans Rothfuss | 1992-07-07 |
| 5056762 | Apparatus for mounting a gas washing sink in a centered manner in a perforated brick | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Josef Seeger, Manfred Winkelmann | 1991-10-15 |
| 5007621 | Apparatus for mounting a gas washing sink in a centered manner in perforated brick | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Josef Seeger, Manfred Winkelmann | 1991-04-16 |
| 4978108 | Gas washing sink without integral closure member | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Josef Seeger, Manfred Winkelmann | 1990-12-18 |