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 | Hermann Leupold, Franc Schellberg | 1991-09-24 |
| 4829538 | Furnace hearth | Hartmut Hlawatschek, Kurt Bohm, Manfred Schubert | 1989-05-09 |
| 4648097 | Electrode for an electric arc furnace | Hartmut Hlawatschek, Hans Leistner | 1987-03-03 |
| 4508504 | Blast heating apparatus for blast furnaces | Friedrich Eschmann, Peter Nold, Gotthard Staats, Gerhard Subat | 1985-04-02 |
| 4212926 | Parts subject to wear which come into contact with metal melts | Hermann Leupold, Franz Schellberg | 1980-07-15 |