Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874037 | Apparatus for cooling a hot product gas | Michael Nagl | 1989-10-17 |
| 4865626 | Process for producing gas containing CO and H.sub.2 | Rolf Hauk, Walter Maschlanka | 1989-09-12 |
| 4861369 | Process for gaining electric energy in addition to producing molten pig iron and an arrangement for carrying out the process | Ludwig von Bogdandy, Werner Kepplinger, Kurt Stift, Rolf Hauk | 1989-08-29 |
| 4857105 | Process for producing pig iron using coal degassing reactor to form reductants | Rolf Hauk | 1989-08-15 |
| 4851039 | Process for the production of pig iron using cyclone | Rolf Hauk | 1989-07-25 |
| 4846449 | Melting gasifier | Rolf Hauk, Peter Lang | 1989-07-11 |
| 4805880 | Fluidized bed arrangement for the production of molten pig iron and steel pre-products | Rolf Hauk, Klaus Langner, Michael Nagl, Werner Kepplinger, Leopold Seirlehner | 1989-02-21 |
| 4766098 | Method of protecting a coal gasifier part from attack by liquid slags | Hans-Jurgen Gulas, Josef Horak, Horst Sulzbacher | 1988-08-23 |
| 4728360 | Process for the production of molten pig iron and steel pre-products | Rolf Hauk, Klaus Langner, Michael Nagl, Werner Kepplinger, Leopold Seirlehner | 1988-03-01 |
| 4605205 | Arrangement comprising a gasifier and a direct reduction furnace | Klaus Langner, Rolf Hauk, Michael Nagl | 1986-08-12 |
| 4374585 | Apparatus for the direct reduction of iron ores | Gunther Ropke, Hans J. Topfer | 1983-02-22 |
| 4248623 | Process for the direct reduction of iron ores | Gunther Ropke, Hans J. Topfer | 1981-02-03 |