Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33700 | Parts subject to wear which come into contact with metal melts | Gunter Gelsdorf, Franc Schellberg | 1991-09-24 |
| 4988649 | Silica bricks and process for production thereof | Klaus Santowski, Alois Angeler | 1991-01-29 |
| 4623130 | Refractory member formed of fiber material for use in sliding closure unit | Raimund Bruckner, Axel Eschner | 1986-11-18 |
| 4268016 | Valve element for sliding type valve joints on the outlet of vessels containing molten metal and process for making same | Axel Eschner, Peter Jeschke | 1981-05-19 |
| 4212926 | Parts subject to wear which come into contact with metal melts | Gunter Gelsdorf, Franz Schellberg | 1980-07-15 |