Issued Patents 2011
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8002984 | Green sorption material mixes for water treatment | Ni-Bin Chang | 2011-08-23 |
| 8002985 | Passive nutrient removal material mixes | Ni-Bin Chang | 2011-08-23 |
| 7955507 | Functionalized green filtration media for passive underground drainfield for septic tank nutrient removal | Ni-Bin Chang, Ammarin Makkeasorn | 2011-06-07 |
| 7927484 | Passive underground drainfield for septic tank nutrient removal using functionalized green filtration media | Ni-Bin Chang, Ammarin Makkeasorn | 2011-04-19 |
| 7897047 | Retention/detention pond and green roof passive nutrient removal material mixes | Ni-Bin Chang | 2011-03-01 |