Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5259959 | Anoxic ammonia oxidation | — | 1993-11-09 |
| 5256380 | Startup openings in a three-phase gaslift loop reactor | Rene Weltevrede | 1993-10-26 |
| 5078884 | Anoxic ammonia oxidation | — | 1992-01-07 |
| 4735723 | Anaerobic purification of waste water containing sulfate and organic material | — | 1988-04-05 |
| 4384956 | Waste water purification | — | 1983-05-24 |