Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5425229 | Process for utilizing the energy contained in the blast furnace gas of a shaft furnace | Karl-Heinz Schmitz | 1995-06-20 |
| 5199965 | Bag filter | — | 1993-04-06 |
| 4922505 | Plant for utilization of exhaust gases of an electric steel furnace | Karl-Heinz Schmitz, Bernfried Stache, Gunter Kleff, Heinrich Becker | 1990-05-01 |
| 4197013 | Calibration of dust monitoring instruments | Heinz Dahlmann, Helmut Gauter, Wilhelm Thielmann | 1980-04-08 |