Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7648631 | Apparatus for wastewater treatment using nitrogen/phosphorus removal and floatation separation | Yong Su Choi, Sang Hyup Lee, Seok Won Hong, Tai Hak Chung, Yun Jung Kim | 2010-01-19 |
| 7485231 | Activated sludge process using downflow sludge blanket filtration | Ik Tai Yeom, Hyung-Soo Kim, Yong Hyo Park | 2009-02-03 |