Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6623642 | System for removing phosphorus from waste water | — | 2003-09-23 |
| 6214229 | Treatment system for removing phosphorus | — | 2001-04-10 |
| 5330651 | Treatment of contaminated agricultural run-off | David W. Blowers, Carol J. Ptacek | 1994-07-19 |
| 5318699 | Denitrification of septic tank effluent | John A. Cherry | 1994-06-07 |