Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7007344 | Safety unit of hinge for folding ladder | — | 2006-03-07 |
| 6771621 | Method for allocating link resources between mobile switching center and base station | — | 2004-08-03 |
| 6711780 | Hinge for collapsible ladders | — | 2004-03-30 |
| 5696769 | Decision error correcting method of a digital communication system and the digital communication system for the same | Seung Won Choi | 1997-12-09 |