Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8721886 | River water purification apparatus and method using treatment soil layer and permeable filtering medium layer | Kyung Guen Song, Kang Woo Cho, Dong-Won Ki, Jin-woo Cho, Se Yeon Won +2 more | 2014-05-13 |
| 7314563 | Membrane coupled activated sludge method and apparatus operating anoxic/anaerobic process alternately for removal of nitrogen and phosphorous | Jin-woo Cho, Kyung Guen Song, Kyung Min Poo | 2008-01-01 |
| 6344143 | Process for wastewater treatment using intermittently decanted extended aeration process | Ick Tae Yeom, Hyung Jib Lee, Suh-hyung LEE, Kil-Jae Lee | 2002-02-05 |
| 5997743 | Water treatment method using hollow fiber membrane and apparatus therefor | Hyung-Soo Kim, Kyung Guen Song | 1999-12-07 |
| 5708040 | Method for preparing porous membranes utilizing water or organic vapor adsorption | Jae-Min Hong, Seong Ryong Ha, Hyun C. Park, Yong Soo Kang | 1998-01-13 |
| 5531125 | Method and device for simultaneously measuring the flow speed and the depth of a river | Hak-Su Chang | 1996-07-02 |