Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8786194 | Constant current driving apparatus for LEDs | — | 2014-07-22 |
| 5776993 | Thermoplastic PVC foam composition | Jae Yeon Lee, Dong Keun Kim, Seoun Jun Kim, Sung Ok Cho | 1998-07-07 |