Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626754 | Apparatus and process for biological wastewater treatment with controlled addition of carbonaceous organic substrates in the anoxic phase | — | 1997-05-06 |
| 5242592 | Process for biological waste water treatment | — | 1993-09-07 |
| 5076928 | Process for biological wastewater treatment | — | 1991-12-31 |
| 4333838 | Method and apparatus for purifying an activated sludge-waste water mixture | — | 1982-06-08 |