Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6506225 | Method for integrated desulfurizing of pig iron melt and steel melt | — | 2003-01-14 |
| 4726839 | Process and an arrangement for the production of steel from sponge iron | Harald Berger | 1988-02-23 |