Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10395286 | Reactor for bulk production of photosynthetic microorganisms | — | 2019-08-27 |
| 9944961 | Process for removing sulphide from an aqueous solution | Erik VAN ZESSEN, Antonius Johannes Jorna, Hendrik Dijkman | 2018-04-17 |
| 9534194 | Reactor for bulk production of photosynthetic microorganisms | — | 2017-01-03 |
| 9233865 | Bioreactor comprising a mixing chamber | Douwe Frankena | 2016-01-12 |
| 8728318 | Settling device, purifier comprising a settling device and methods for anaerobic or aerobic purification of waste water | Antonius Johannes Jorna | 2014-05-20 |
| 8715504 | Process for removing sulfide from alkaline washing liquids | René Alexander Rozendal, Erik VAN ZESSEN | 2014-05-06 |
| 8066878 | Anaerobic purification device | Jelle Hendrik de Boer, Antonius Johannes Jorna, Leonard Hubertus Alphonsus Habets | 2011-11-29 |
| 7722768 | Process for the simultaneous removal of BOD and phosphate from waste water | Wiebe Abma, Ronald Mulder | 2010-05-25 |
| 7083729 | Device and method for cleaning a fluid, such as water | — | 2006-08-01 |
| 6841072 | Method and device for the anaerobic purification of a slurry which contains organic constituents | Ronald Mulder | 2005-01-11 |
| 6758886 | Three-phase separator and installation for biological purification of effluent | — | 2004-07-06 |
| 6063273 | Apparatus for the biological purification of waste water | Leonard Hubertus Alphonsus Habets, Antonius Johannes Hendrikus Hyacinthus Engelaar | 2000-05-16 |
| 5904850 | Settling device for a fluid containing liquid, gas and particulate material, as well as a cleaning device provided herewith and a method for cleaning waste water | — | 1999-05-18 |
| 5565098 | Reactor for the biological treatment of water | — | 1996-10-15 |
| 5518618 | System and process for purifying waste water which contains nitrogenous compounds | Ronald Mulder | 1996-05-21 |
| 5431819 | Process for the biological treatment of solid organic material | Petrus J. F. M. Hack | 1995-07-11 |
| 5338447 | Bioreactor | — | 1994-08-16 |
| 4758339 | Equipment for the anaerobic purification of waste water | — | 1988-07-19 |
| 4707254 | Apparatus for purifying water | — | 1987-11-17 |
| 4622147 | Plant for the anaerobic purification of waste water | — | 1986-11-11 |
| 4609460 | Anaerobic purification equipment for waste water | — | 1986-09-02 |