Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8440082 | Method and apparatus for the solid-liquid-separation of material mixtures and suspensions | — | 2013-05-14 |
| 8366942 | Method and apparatus for the solid-liquid-separation of material mixtures and suspensions | — | 2013-02-05 |
| 5961827 | Apparatus for dewatering of sludge and similar substances | — | 1999-10-05 |
| 5863429 | Method and apparatus for removing water from sludge and similar substances | — | 1999-01-26 |
| 5059321 | Device for expressing plant matter, particularly for re-pressing sugar-beet chips | — | 1991-10-22 |
| 5051194 | Procedure and chamber filter press for dewatering slurries and similar substances | — | 1991-09-24 |
| 4971625 | Method for leaching gold and/or silver out of ores or out of ore-concentrates and also out of precious-metal wastes or precious-metal scrap by using cyanide-containing leaching solutions | — | 1990-11-20 |
| 4906369 | Apparatus for dewatering sludge and similar substances | — | 1990-03-06 |
| 4448681 | Floatation arrangement | Hans Ludke, Friedrich-Wilhelm Mehrhoff, Karl Legner | 1984-05-15 |
| 4275847 | Process for the treatment of aluminum-salt slags | Joachim Kues | 1981-06-30 |
| 4266474 | Chamber type filter press for de-watering sludges and similar substances | — | 1981-05-12 |
| 4208276 | Flotation plant | — | 1980-06-17 |
| 4181616 | Device for dewatering sludge or the like | — | 1980-01-01 |