Issued Patents 1989
Showing 1–7 of 7 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 |