Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8557114 | Water purification apparatus and method for using pressure filter and pore control fiber filter | Eui-Sin Lee, Bum-Goo Lee, Hee-Kyong Oh | 2013-10-15 |
| 8518261 | Water purification apparatus and method for using pressure filter and pore control fiber filter | Eui-Sin Lee, Bum-Goo Lee, Hee-Kyong Oh | 2013-08-27 |