Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5762509 | Ballast casing for fluorescent lamp | — | 1998-06-09 |
| 5675221 | Apparatus and method for transmitting foward/receiving dimming control signal and up/down encoding manner using a common user power line | Hong Ki YOO, Ki Ju Im, Sang Kyeong Lee, Eun Tai Jung, Kyung Ho Lee +2 more | 1997-10-07 |
| 5424615 | Discharge lamp ballast operating on induced voltage in the primary winding of a boosting transformer | — | 1995-06-13 |
| 5378964 | Electronic ballast circuit for discharge lamps | — | 1995-01-03 |