Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8391331 | Method of charging fine-grained metals into an electric-arc furnace | Heinz Eichberger | 2013-03-05 |
| 6544471 | Method and apparatus for producing high chromium content steels and/or ferroalloys in an electric arc converter | Wei-Ping Wu, Karl-Heinz Deppner | 2003-04-08 |
| 6068676 | Method and apparatus for producing high chromium content steels and/ or ferroalloys in an electric arc converter | Wei-Ping Wu, Karl-Heinz Deppner | 2000-05-30 |
| 5602867 | Method of and device for operating an arc furnace with two vessels | Andreas Hubers | 1997-02-11 |