| 4940487 |
Process for utilizing of zinc-containing metallurgical dusts and sludges |
Luzian Pochmarski |
1990-07-10 |
| 4673510 |
Process for the disposal of settled sludge derived from a biological sewage-disposal plant |
Alois Janusch, Fritz Ludewig |
1987-06-16 |
| 4651656 |
Method for processing a heavy-metal-containing residue from the chemical industry |
Felix Wallner, Adam Krier, Gotthard Uckert, Paul Freimann |
1987-03-24 |
| 4644557 |
Process for the production of calcium carbide and a shaft furnace for carrying out the process |
Joachim Ebeling, Peter Friedrich, Herbert Jekat, Ernst Riegler, Ernst Zajicek +2 more |
1987-02-17 |
| 4617671 |
Arrangement for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
Paul Mullner, Wilhelm Schiffer, Alois Leutgob |
1986-10-14 |
| 4606038 |
Plant for producing calcium carbide |
Ernst Riegler, Ernst Zajicek |
1986-08-12 |
| 4546483 |
Plasma melting furnace arrangement |
Alois Leutgob, Ernst Riegler, Ernst Zajicek, Othmar Puhringer |
1985-10-08 |
| 4533385 |
Method for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
Paul Mullner, Wilhelm Schiffer, Alois Leutgob |
1985-08-06 |
| 4518419 |
Method of carrying out metallurgical or chemical processes in a shaft furnace, and a low shaft furnace therefor |
Ernst Riegler, Ernst Zajicek |
1985-05-21 |
| 4518417 |
Method of, and arrangement for, reducing oxide-containing fine-particle ores |
Alois Leutgob, Ernst Riegler, Paul Mullner |
1985-05-21 |
| 4504307 |
Method for carrying out melting, melt-metallurgical and/or reduction-metallurgical processes in a plasma melting furnace as well as an arrangement for carrying out the method |
Othmar Steipe, Ernst Riegler, Ernst Zajicek |
1985-03-12 |
| 4493088 |
Plasma melting furnace |
Helmut D. Kilches, Ernst Riegler, Ernst Zajicek |
1985-01-08 |
| 4436290 |
Plasma melting furnace arrangement |
Helmut D. Kilches, Ernst Riegler, Ernst Zajicek |
1984-03-13 |
| 4426709 |
Arrangement for the production of steel |
Josef Fegerl |
1984-01-17 |
| 4423512 |
Plasma melting furnace |
Ernst Riegler, Ernst Zajicek |
1983-12-27 |
| 4414673 |
Plasma melting furnace |
Ernst Riegler |
1983-11-08 |
| 4396421 |
Method of, and arrangement for, producing molten pig iron or steel pre-material |
Kurt Stift |
1983-08-02 |
| 4289541 |
Process of cleaning an austenitic steel surface |
Felix Wallner |
1981-09-15 |