Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8627909 | Walking-assistant device | Yoon Young Chang, Juhn Ho Park, Byungju Dan, Hong Gul Jun, Byunghoon Min | 2014-01-14 |
| 8199622 | Method for emulating optical disk, optical disk drive using the same, and optical disk including security zone | In Chang Yang, Byung-Ju Dan, Young Mo Goo | 2012-06-12 |