Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7955507 | Functionalized green filtration media for passive underground drainfield for septic tank nutrient removal | Martin P. Wanielista, Ni-Bin Chang | 2011-06-07 |
| 7927484 | Passive underground drainfield for septic tank nutrient removal using functionalized green filtration media | Martin P. Wanielista, Ni-Bin Chang | 2011-04-19 |