Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9355323 | Image correction method and apparatus for visually impaired person | Yang Taik Yoon, Kyeong Seon Choi, Sang Jun Lee, Young Guk Ryu | 2016-05-31 |
| 8743278 | Portable magnifying apparatus having multi angular positioned handle | Yang Taik Yoon, Kyeong Seon Choi, Sang Jun Lee, Wock Lyul Lee | 2014-06-03 |
| 8194154 | Portable video magnifying apparatus | Yang Taik Yoon, Kyeong Seon Choi, Wock Lyul Lee | 2012-06-05 |