Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8315416 | Necklace type detachable three dimensional sound reproduction apparatus | — | 2012-11-20 |
| 8275159 | Media playback apparatus having speakers with rotatable connecting means | — | 2012-09-25 |
| 6138607 | Device for automatically preparing and feeding liquid feed stuff for piglets | Yong-Hee Ru, Jung Han | 2000-10-31 |