Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7291265 | Passive treatment of wastewater and contaminated groundwater | Mark A. Phifer, Frank Sappington, Margaret R. Millings, Charles E. Turick | 2007-11-06 |
| 7147779 | Passive treatment of wastewater and contaminated groundwater | Mark A. Phifer, Frank Sappington, Margaret R. Millings, Charles E. Turick | 2006-12-12 |