Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5603887 | Process of making refractory fiber structures | — | 1997-02-18 |
| 5552213 | Refractory fiber structures | — | 1996-09-03 |
| 5420087 | Refractory or fireproof brick as tin bath bottom brick | Klaus Wieland, Thomas Weichert, Christoph Wohrmeyer | 1995-05-30 |
| 5346868 | Inorganic fiber | — | 1994-09-13 |
| 4984769 | Tap spout for metallurgical vessels and method of repairing | Raimund Bruckner, Wilhelm Langenfeld, Manfred Oberbach, Hans Rothfuss, Dieter Stusser | 1991-01-15 |
| 4631074 | Method and apparatus for reducing the temperature of air | — | 1986-12-23 |
| 4623130 | Refractory member formed of fiber material for use in sliding closure unit | Raimund Bruckner, Hermann Leupold | 1986-11-18 |
| 4564485 | Process for producing a plastic composition which can be processed into a fire-resistant material | Rudolf Ganz, Gunter Tkotz, Hermann Stein, Klaus Kreuels | 1986-01-14 |
| 4436680 | Process for producing granular, fire-resistant material | Rudolf Ganz, Gunter Tkotz, Hermann Stein, Klaus Kreuels | 1984-03-13 |
| 4268016 | Valve element for sliding type valve joints on the outlet of vessels containing molten metal and process for making same | Hermann Leupold, Peter Jeschke | 1981-05-19 |
| 4265845 | Process for the production of a ceramic heat-retaining brick | — | 1981-05-05 |
| 4241781 | Regenerative heater and process for the operation thereof | Erich Pohlmann | 1980-12-30 |