Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10961141 | Sewage/wastewater treatment system using granular activated sludge and membrane bio-reactor and sewage/wastewater treatment method using the same | Younggeun Lee, Hyungkeun Roh, Gunmyung Lee | 2021-03-30 |
| 10550022 | Sewage/wastewater treatment system using granular activated sludge and membrane bio-reactor and sewage/wastewater treatment method using the same | Younggeun Lee, Hyungkeun Roh, Gunmyung Lee | 2020-02-04 |
| 10232316 | Submerged membrane filtration system using reciprocating membrane | Hyung Keun Roh | 2019-03-19 |
| 10112148 | Membrane bioreactor system using reciprocating membrane | Shaleena Smith, Gyu Dong Kim, Jaren Patamasank, Petia Tontcheva, Hyung Keun Roh | 2018-10-30 |
| 9884295 | Membrane bioreactor system using reciprocating membrane | Shaleena Smith, Gyu Dong Kim, Jaren Patamasank, Petia Tontcheva, Hyung Keun Roh | 2018-02-06 |
| 9833741 | Submerged membrane filtration system using reciprocating membrane | Hyung Keun Roh | 2017-12-05 |