Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9067809 | Apparatus and method for anaerobic wastewater treatment with membrane | Kyung Guen Song, Jung Yeol LEE, Jun Hee RYU, Min-hyuk Yoon | 2015-06-30 |
| 8721886 | River water purification apparatus and method using treatment soil layer and permeable filtering medium layer | Kyu Hong Ahn, Kyung Guen Song, Kang Woo Cho, Dong-Won Ki, Jin-woo Cho +2 more | 2014-05-13 |