Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5762801 | Process and apparatus for biological treatment of water | Lennart Lenvik, Magnus Hagrot, Jonas Oskarsson | 1998-06-09 |
| 5755959 | Device for supplying a suspension to a filter at different levels within the filter and in proportions such that a uniformly distributed flow of suspension is achieved across the filter area | Lennart Lenvik, Magnus Hagrot, Jonas Oskarsson | 1998-05-26 |
| 5681472 | Method and apparatus for separating gaseous bubbles and sand from a liquid flow | Magnus Hagrot, Lennart Lenvik | 1997-10-28 |
| 5472610 | Blowing a gas into a granular filter bed | — | 1995-12-05 |
| 5372720 | Method for purification of wastewater | — | 1994-12-13 |
| 4352391 | Method and apparatus for recovering heat in waste water | — | 1982-10-05 |