| 4846083 |
Method of processing contaminated mineral substances |
— |
1989-07-11 |
| 4806158 |
Process of reducing fine-grained iron-containing material by means of solid carbonaceous reducing agents |
Martin Hirsch, Fritz Rose |
1989-02-21 |
| 4789580 |
Process of reducing higher metal oxides to lower metal oxides |
Martin Hirsch, Hermann Lommert |
1988-12-06 |
| 4551172 |
Process of producing liquid carbon-containing iron |
Lothar Formanek, Martin Hirsch, Wolfram Schnabel, Klaus-Dietrich Fritzsche, Heribert Koenig +1 more |
1985-11-05 |
| 4540432 |
Continuous process of melting sponge iron |
Martin Hirsch, Peter Fischer |
1985-09-10 |
| 4490168 |
Process of making steel by melting sponge iron in an electric arc furnace |
Lothar Formanek, Martin Hirsch, Wolfram Schnabel, Klaus-Dietrich Fritzsche, Heribert Koenig +1 more |
1984-12-25 |
| 4469509 |
Process of producing sponge iron by a direct reduction of iron oxide-containing material in a rotary kiln |
Karl-Heinz Fischer, Wolfram Schnabel |
1984-09-04 |
| 4444568 |
Method of producing fuel gas and process heat fron carbonaceous materials |
Hans Beisswenger, Georg Daradimos, Martin Hirsch, Ludolf Plass |
1984-04-24 |
| 4443250 |
Process of producing sponge iron by a direct reduction of iron oxide-containing materials |
Kurt Meyer, Lothar Reh, Martin Hirsch, Wolfram Schnabel |
1984-04-17 |
| 4436286 |
Process of afterburning combustible constituents of exhaust gases from rotary kilns |
Wolfram Schnabel, Ernst Scheu |
1984-03-13 |
| 4391583 |
Process of thermally treating bulk materials in a rotary kiln |
Detlev Schlebusch, Gerhard Reuter, Wolfram Schnabel |
1983-07-05 |
| 4312666 |
Steel making process |
Gerhard Reuter, Wolfram Schnabel, Heinz Eichberger |
1982-01-26 |
| 4308055 |
Process of briquetting sponge iron-containing material |
Horst Steinhofel, Werner Kaas, Justus Kuhn, deceased |
1981-12-29 |
| 4268304 |
Direct reduction process in a rotary kiln |
Friedrich Rosenstock, Gunter Kotzschke |
1981-05-19 |
| 4247323 |
Process of directly reducing iron oxide-containing materials |
Wolfram Schnabel, Gerhard Reuter |
1981-01-27 |
| 4238222 |
Waelz process of volatilizing zinc and lead from iron oxide-containing materials |
Gerhard Reuter, Wolfram Schnabel, Gunter Kossek |
1980-12-09 |
| 4220631 |
Process of calcining limestone or hydrated lime in a rotary kiln |
Heinz Eichberger, Hermann Lommert, Herbert Lausch, Horst Steinhofel |
1980-09-02 |