Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5738823 | Meltdown apparatus | Goran Grimfjard, Gerhard Lempa, Sven-Einar Stenkvist | 1998-04-14 |
| 5719897 | Furnace vessel for a direct current arc furnace | Sven-Einar Stenkvist | 1998-02-17 |
| 4754463 | Hollow arc electrode | Kjell Bergman | 1988-06-28 |
| 4606055 | DC arc furnace having starting equipment | Sven-Einar Stenkvist | 1986-08-12 |
| 4550413 | Symmetrical current conductor system for a DC arc furnace | Sven-Einar Stenkvist | 1985-10-29 |
| 4473903 | Apparatus for positioning an electric arc furnace electrode | Kjell Bergman | 1984-09-25 |
| 4403328 | DC Arc furnace power connection system | Sven-Einar Stenkvist | 1983-09-06 |