Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8663468 | Reactor for anaerobic purification of waste water including multi-phase separator devices | Axel Gommel, Dieter Efinger | 2014-03-04 |
| 8354027 | Sludge extraction system for biological waste water reactors | Axel Gommel, Dieter Efinger, Werner Gessler | 2013-01-15 |
| 8337699 | Reactor inlet | Axel Gommel, Dieter Efinger, Werner Gessler | 2012-12-25 |
| 8133392 | Three-phase cascade separator | Lukas Menke, Georgios Troubounis | 2012-03-13 |
| 7722768 | Process for the simultaneous removal of BOD and phosphate from waste water | Wiebe Abma, Sjoerd Hubertus Jozef Vellinga | 2010-05-25 |
| 6841072 | Method and device for the anaerobic purification of a slurry which contains organic constituents | Sjoerd Hubertus Jozef Vellinga | 2005-01-11 |
| 6372139 | Circuit purification for the papermaking industry | Leonard Hubertus Alphonsus Habets | 2002-04-16 |
| 5518618 | System and process for purifying waste water which contains nitrogenous compounds | Sjoerd Hubertus Jozef Vellinga | 1996-05-21 |