Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8824148 | Shock prevention apparatus of medium cassette and financial device | — | 2014-09-02 |
| 8749458 | Organic light emitting diode display capable of adjusting a high potential driving voltage applied to pixel | — | 2014-06-10 |
| 8071979 | Display device | Changhyung Lee | 2011-12-06 |
| 7936432 | Display device | Changhyung Lee | 2011-05-03 |