Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5989428 | Controlling wastewater treatment by monitoring oxygen utilization rates | — | 1999-11-23 |
| 5013441 | Biological nutrient removal with sludge bulking control in a batch activated sludge system | — | 1991-05-07 |
| 4891128 | Solids excluding surface skimmer | — | 1990-01-02 |
| 4693821 | Weir for waste water treatment systems | Raul Olavarria | 1987-09-15 |
| 4663044 | Biological treatment of wastewater | — | 1987-05-05 |