| 6238453 |
Producing stainless steels in parallel operated vessels |
Lutz Rose, Hartmut Vorwerk, Horst Kappes |
2001-05-29 |
| 5811057 |
Refractory lining system for high wear area of high temperature reaction vessel |
David H. Hubble |
1998-09-22 |
| 5741349 |
Refractory lining system for high wear area of high temperature reaction vessel |
David H. Hubble |
1998-04-21 |
| 5601625 |
Process and device for removing heavy metals and compounds containing heavy metals |
— |
1997-02-11 |
| 5286008 |
System for inerting a casting vessel used for transporting molten metal |
Hans De Haas, Klaus Grutzmacher, Erhard Krause, Horstmar Mohnkern, Manfred Lowenstein +3 more |
1994-02-15 |
| 5246485 |
Method and apparatus for preventing fume production when transporting molten metal from a metallurgical vessel to casting vessels |
Hans De Haas, Klaus Grutzmacher, Erhard Krause, Horstmar Mohnkern, Manfred Lowenstein +3 more |
1993-09-21 |
| 4981510 |
Process and apparatus for the production of ferrochromium |
Wilhelm Janssen |
1991-01-01 |
| 4772316 |
Process for the reduction of iron-containing chrome ores |
Dietrich Radke, Wilhem Janssen |
1988-09-20 |
| 4629506 |
Process for the production of ferrochromium |
Wilhelm Janssen, Dieter Neuschuetz, Thomas Hoster, Hermann Doerr, Dietrich Radke |
1986-12-16 |
| 4599068 |
Apparatus for preheating granular ore |
Wilhelm Janssen |
1986-07-08 |
| 4581061 |
Method for reducing oxidic iron ores in a rotary kiln |
Wilhelm Janssen |
1986-04-08 |
| 4576638 |
Process for the production of ferromanganese |
Hermann Doerr, Thomas Hoster, Dieter Neuschuetz, Dietrich Radke, Wilhelm Janssen |
1986-03-18 |
| 4389040 |
Apparatus for separating a sponge iron product produced in a rotary furnace |
Wilhelm Janssen, Reinhard Herbrig |
1983-06-21 |
| 4189314 |
Method of utilizing waste dust and waste sludge from blast furnaces and steel works |
Ludwig Fiege, Hans-Werner Hohle, Wilhelm Janssen |
1980-02-19 |