Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6978980 | Slide valve closure for the casting of a metal melt and a refractory plate unit belonging to it | Harry Amsler, Wolfgang Muller, Ralf Bock | 2005-12-27 |
| 6045015 | Coupling for a linear actuator and a sliding valve unit for a sliding gate valve of a molten metal vessel | Rolf Waltenspuhl, Peter Christen | 2000-04-04 |
| 5836485 | Sliding gate valve assembly for a vessel containing molten metal | Walter Toaldo | 1998-11-17 |
| 5698129 | Sliding gate valve for a metallurgical vessel | Werner Keller, Walter Toaldo, Hans Muller, Anton Pfyl | 1997-12-16 |
| 5429342 | Slide gate nozzle including sequentially replaceable refractory sliding plates and refractory plate assembly employable therein | Anton Pfyl, Werner Keller, Walter Toaldo | 1995-07-04 |