Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636581 | Grate bar and grate with cooling apparatus and process for cooling | Holger Kleen, Hans Mayer | 1997-06-10 |
| 4838934 | Process for a direct reduction of iron oxide containing materials in a rotary kiln | Gerd Elsenheimer | 1989-06-13 |
| 4676824 | Process for generating heat and producing sponge iron | Georg Daradimos, Martin Hirsch | 1987-06-30 |
| 4581401 | Radiation sensitive polymeric material | Frithjof Asmussen, Peter Quis, Winfried Wunderlich, Hideto Sotobayashi | 1986-04-08 |
| 4551414 | Positive resist material | Frithjof Asmussen, Hideto Sotobayashi, Jiang-Tsun Chen | 1985-11-05 |
| 4551172 | Process of producing liquid carbon-containing iron | Lothar Formanek, Martin Hirsch, Harry Serbent, Klaus-Dietrich Fritzsche, Heribert Koenig +1 more | 1985-11-05 |
| 4539188 | Process of afterburning and purifying process exhaust gases | Martin Hirsch, Harald Sauer, Hans-Werner Schmidt | 1985-09-03 |
| 4490168 | Process of making steel by melting sponge iron in an electric arc furnace | Lothar Formanek, Martin Hirsch, Harry Serbent, 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, Harry Serbent | 1984-09-04 |
| 4443250 | Process of producing sponge iron by a direct reduction of iron oxide-containing materials | Kurt Meyer, Lothar Reh, Martin Hirsch, Harry Serbent | 1984-04-17 |
| 4436286 | Process of afterburning combustible constituents of exhaust gases from rotary kilns | Ernst Scheu, Harry Serbent | 1984-03-13 |
| 4391583 | Process of thermally treating bulk materials in a rotary kiln | Harry Serbent, Detlev Schlebusch, Gerhard Reuter | 1983-07-05 |
| 4369059 | Process of directly reducing iron oxide containing materials in a rotary kiln | Gerd Elsenheimer | 1983-01-18 |
| 4368177 | Process of producing quicklime by calcining in a rotary kiln | Gerhard Reuter, Herbert Lausch | 1983-01-11 |
| 4312666 | Steel making process | Harry Serbent, Gerhard Reuter, Heinz Eichberger | 1982-01-26 |
| 4259081 | Process of calcining limestone in a rotary kiln | Gerhard Reuter, Herbert Lausch | 1981-03-31 |
| 4247323 | Process of directly reducing iron oxide-containing materials | Harry Serbent, Gerhard Reuter | 1981-01-27 |
| 4238222 | Waelz process of volatilizing zinc and lead from iron oxide-containing materials | Harry Serbent, Gerhard Reuter, Gunter Kossek | 1980-12-09 |
| 4181520 | Process for the direct reduction of iron oxide-containing materials in a rotary kiln | Gerhard Reuter | 1980-01-01 |