Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5456881 | Process for thermally separating organic and/or inorganic substances from contaminated material | Gebhard Bandel, Stephan Becker, Gurudas Samant, Erhard Weilandt, Johann Renner | 1995-10-10 |
| 4969775 | Process of dressing contaminated soils | Fred Cappel, Heinrich Meiler, Friedrich Rosenstock | 1990-11-13 |
| 4747356 | Process of burning cattle dung | Hans Beisswenger, Fred Cappel, Walter Koch | 1988-05-31 |
| 4525207 | Process of producing briquettes to be charged to zinc-producing shaft furnaces | — | 1985-06-25 |