Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4696457 | Means for charging liquid slag to a closed smelting furnace | Jan A. Aune | 1987-09-29 |
| 4646317 | Electrode holder system for electrothermic smelting furnaces | — | 1987-02-24 |
| 4593886 | Method for charging liquid slag to a closed smelting furnace | Jan A. Aune | 1986-06-10 |
| 4543656 | Electrode holder system for electrothermic smelting furnaces | — | 1985-09-24 |
| 4481637 | Arrangement of electrode holders | — | 1984-11-06 |
| 4435815 | Method and apparatus for charging a furnace | — | 1984-03-06 |
| 4424584 | Electrode holder assembly for self-baking electrodes | — | 1984-01-03 |