Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454833 | Process for producing liquid pig iron or semifinished steel products from iron-containing materials | Michael Nagl, Johannes Schenk | 2002-09-24 |
| 6416566 | Process for the production of liquid pig iron or liquid steel pre-products | Felix Wallner, Johannes Schenk, Il Ock Lee, Yong-Ha Kim, Moon Duk Park | 2002-07-09 |
| 6264722 | Process for producing liquid pig iron or intermediate steel products and installation for implementing it | Felix Wallner, Johannes Schenk | 2001-07-24 |
| 6241801 | Method for treating particulate material in the fluidized bed method and vessel and plant for carrying out the method | Felix Wallner, Johannes Schenk, Franz Hauzenberger, Il Ock Lee | 2001-06-05 |
| 6235082 | Process for producing liquid metal and facilities for carrying out the process | Johann Wurm, Johannes Schenk | 2001-05-22 |
| 6149708 | Process for producing sponge iron | Felix Wallner, Udo Gennari | 2000-11-21 |
| 6030432 | Process for reducing ore fines and arrangement for carrying out the process | Felix Wallner, Johannes-Leopold Schnek, Udo Gennari, Il Ock Lee, Yong-Ha Kim +1 more | 2000-02-29 |
| 5989309 | Method for injecting fine iron ore in smelting reducing process | Sang Hoon Joo, Sang-Deok Lee, Il Ock Lee, Felix Wallner | 1999-11-23 |
| 5961690 | Process for producing molten pig iron of liquid steel preproducts and plant for carrying out the process | Felix Wallner, Johannes Schenk | 1999-10-05 |
| 5948139 | Process for the production of molten pig iron or steel pre-products and a plant for carrying out the process | Felix Wallner, Johannes Schenk | 1999-09-07 |
| 5858058 | Process and plant for avoiding metal dusting in the direct reduction of iron-oxide-containing materials | Gerald N. Kern, Johannes Schenk, Roy Hubert Whipp, Jr. | 1999-01-12 |
| 5762681 | Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus | Il Ock Lee, Yong-Ha Kim, Hang Goo Kim, Bong Jin Jung, Uoo Chang Chung +2 more | 1998-06-09 |
| 5584910 | Process for producing molten pig iron or molten steel pre-products | Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka, Christian Böhm | 1996-12-17 |
| 5535991 | Plant for producing molten pig iron or molten steel pre-products | Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka, Christian Böhm | 1996-07-16 |
| 5534046 | Process for producing molten pig iron or molten steel pre-products | Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka, Christian Böhm | 1996-07-09 |
| 5259594 | Hot dust recycling apparatus | Herbert Mayr, Rolf Hauk, Rodgan Vuletic | 1993-11-09 |
| 5238487 | Process for the production of pig iron and sponge iron | Rolf Hauk | 1993-08-24 |
| 5226951 | Method of starting a plant for the production of pig iron or steel pre-material as well as arrangement for carrying out the method | Rolf Hauk, Bogdan Vuletic, Felix Wallner, Walter Rainer Kastner | 1993-07-13 |
| 4978387 | Process for the production of molten pig iron | — | 1990-12-18 |
| 4878943 | Process of dezincifying a material flow when operating a pig-iron production plant | — | 1989-11-07 |
| 4861369 | Process for gaining electric energy in addition to producing molten pig iron and an arrangement for carrying out the process | Ludwig von Bogdandy, Kurt Stift, Gero Papst, Rolf Hauk | 1989-08-29 |
| 4805880 | Fluidized bed arrangement for the production of molten pig iron and steel pre-products | Rolf Hauk, Gero Papst, Klaus Langner, Michael Nagl, Leopold Seirlehner | 1989-02-21 |
| 4780137 | A process for producing a mixed gas | Walter Rockenschaub | 1988-10-25 |
| 4740240 | Smelting process for recovering metals from fine-grained non-ferrous metal sulfide ores or concentrates | Horst Sulzbacher, Erich Ottenschlager | 1988-04-26 |
| 4728360 | Process for the production of molten pig iron and steel pre-products | Rolf Hauk, Gero Papst, Klaus Langner, Michael Nagl, Leopold Seirlehner | 1988-03-01 |