Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5127632 | Gas flushing device including perforated brick and gas flushing stone assembly | Manfred Winkelmann, Herbert Metzger, Hans Rothfuss | 1992-07-07 |
| 5097995 | Flow starting tube for initiating the flow of molten material from a vessel | Clemens Zybok, Manfred Winkelmann, Manfred Berndt, Rolf Waltenspuhl, Armin Kursfeld | 1992-03-24 |
| 4911338 | Refractory plate assembly including replaceable refractory erosion unit | Manfred Winkelmann | 1990-03-27 |
| 4801055 | Method of repairing or renewing a worn refractory plate of a sliding closure unit | — | 1989-01-31 |
| 4728013 | Refractory plate formed with expansion joints | Manfred Winkelmann | 1988-03-01 |
| 4721236 | Apparatus for minimizing wear on refractory parts for valve closures | — | 1988-01-26 |
| 4711432 | Gas washing device | Michael James Heinz, Joachim Lange, Herbert Naefe, Hans Rothfuss, Manfred Winkelmann +1 more | 1987-12-08 |
| 4709905 | Casing assembly for injecting material into a metallurgical vessel | Manfred Winkelmann, Pierre Gerber | 1987-12-01 |
| 4702460 | Reversible refractory plate in sliding closure unit and method for use thereof | — | 1987-10-27 |
| 4695043 | Gas scavenging apparatus for metallurgical vessels | Manfred Winkelmann, Hans Rothfuss, Karl-Heinz Schmitt | 1987-09-22 |
| 4462576 | Apparatus for supplying gas through the wall of a metallurgical container | Alfried Hohberg | 1984-07-31 |
| 4376501 | Closure element and assembly of a slide closure for use in liquid melt containers | Alfred Hafner | 1983-03-15 |
| 4257543 | Three-plate slide valve closure for liquid melt containers | Emil Schnurrenberger | 1981-03-24 |