Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11251651 | Light-emitting sign device and low-power predictive diagnosis bidirectional adaptive control system comprising same | Ki Hoon Lee | 2022-02-15 |
| 10832598 | Light emitting sign apparatus using optical fiber including solar-responsive light sensors | Ki Hoon Lee | 2020-11-10 |
| 10526757 | Light emitting sign apparatus using optical fiber | Ki Hoon Lee | 2020-01-07 |