Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11235307 | Filtration system and method for treating water containing nitrogen and phosphorous compounds | Ni-Bin Chang | 2022-02-01 |
| 10947131 | Synergistic iron and clay-based green environmental media for nutrient removal | Ni-Bin Chang | 2021-03-16 |
| 10787373 | Iron filings-based green environmental media for nutrient removal and methods of use | Ni-Bin Chang | 2020-09-29 |
| 10696567 | Water treatment using an iron and clay-based sorption media | Ni-Bin Chang | 2020-06-30 |
| 8252182 | Subsurface upflow wetland system for nutrient and pathogen removal in wastewater treatment systems | Ni-Bin Chang | 2012-08-28 |
| 8153005 | Retention/detention pond stormwater treatment system | Ni-Bin Chang | 2012-04-10 |
| 8101079 | On-site wastewater treatment using a functionalized green filtration media sorption field | Ni-Bin Chang, Ammarin Makkeasorn | 2012-01-24 |
| 8002985 | Passive nutrient removal material mixes | Ni-Bin Chang | 2011-08-23 |
| 8002984 | Green sorption material mixes for water treatment | 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 |
| 7824551 | Passive nutrient removal material mixes | Ni-Bin Chang | 2010-11-02 |