Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4676824 | Process for generating heat and producing sponge iron | Martin Hirsch, Wolfram Schnabel | 1987-06-30 |
| 4444568 | Method of producing fuel gas and process heat fron carbonaceous materials | Hans Beisswenger, Martin Hirsch, Ludolf Plass, Harry Serbent | 1984-04-24 |
| 4304759 | Process for obtaining metal oxide and SO.sub.2 -containing gases essentially free of SO.sub.3 and H.sub.2 SO.sub.4 from ferrous sulphate containing salt | Martin Hirsch, Lothar Reh, Jörg Thomas | 1981-12-08 |