Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8508959 | Multi-voltage power supply | — | 2013-08-13 |
| 7940538 | Multi-voltage power supply | — | 2011-05-10 |
| 7675762 | Multi-voltage power supply | — | 2010-03-09 |
| 7605808 | Energy recovery apparatus and method for plasma display panel | Nam Kyu Lee, Bong Gyun Kim, Jang Hwan Cho | 2009-10-20 |
| 7573731 | Active-clamp current-source push-pull DC-DC converter | Jung Min Kwon | 2009-08-11 |
| 6798674 | Half-bridge converter with high power factor | — | 2004-09-28 |
| 6697269 | Single-stage converter compensating power factor | — | 2004-02-24 |