Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851040 | Process for producing iron from fine-grained iron ores | Irmgard Hoster, Thomas Hoster, Dieter Neuschutz | 1989-07-25 |
| 4772316 | Process for the reduction of iron-containing chrome ores | Wilhem Janssen, Klaus Ulrich | 1988-09-20 |
| 4692930 | Floor of electrically heated melting furnace, particularly a direct current furnace | Peter Meger, Heinz Zorcher | 1987-09-08 |
| 4629506 | Process for the production of ferrochromium | Klaus Ulrich, Wilhelm Janssen, Dieter Neuschuetz, Thomas Hoster, Hermann Doerr | 1986-12-16 |
| 4576638 | Process for the production of ferromanganese | Hermann Doerr, Thomas Hoster, Dieter Neuschuetz, Wilhelm Janssen, Klaus Ulrich | 1986-03-18 |
| 4473397 | Foam prevention compositions and processes for use in steel production | Ulrich Bleeck, Alfred Freissmuth | 1984-09-25 |
| 4215101 | Method and apparatus for performing chemical and/or physical treatments | Ernst Kriegel, Hans Klein, Carlos Arbeletche | 1980-07-29 |