Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11198624 | Counterflow adsorption filter column for water treatment | Raik Schönfeld | 2021-12-14 |
| 10093555 | Counter current filter apparatus for treatment or purification of water | Raik Schönfeld | 2018-10-09 |