Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9028653 | Evaporative desalination device of multi stage and multi effect using solar heat | Hee Youl Kwak, Moon Chang Joo, Hong Jin Joo, Kyoung Ho Lee | 2015-05-12 |
| 8113192 | Evacuated tubular solar collector with eccentric type manifold flange | Hee Youl Kwak, Nam Choon Baek, Soon Myeong Rhie | 2012-02-14 |