Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8071014 | Apparatus and method for closing or opening an opening, especially a bottom opening of a material hopper for a blast furnace, and blast furnace having such an apparatus | — | 2011-12-06 |
| 7156371 | Device for opening or closing an opening, in particular a bottom opening of a material bunker for a blast furnace | Frank Engl, Arno Korbmacher | 2007-01-02 |
| 6948930 | Furnace head or furnace throat seal | Ekkehard Brzoska, Friedhelm Paulus | 2005-09-27 |
| 6580744 | Feed device for a shaft furnace | — | 2003-06-17 |
| 6415811 | Cooled slider plate, particularly a water-cooled hot air slider plate | Dietrich Zosel | 2002-07-09 |
| 5667196 | Slide valve to close large fluid conduits, in particular double-disk slide valve | — | 1997-09-16 |
| 5551666 | Butterfly flap valve | — | 1996-09-03 |