Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667566 | Piezoelectric transformer for fluorescent lamp | Jong Sun Kim | 2003-12-23 |
| 6600273 | High-power electronic ballast for fluorescent lamp | Jong Sun Kim, Jong-Man Jung | 2003-07-29 |
| 6544433 | Piezoelectric ceramic composition, and high power output transformer made of the same composition | Jong Sun Kim, Joo Hyun Yoo, Yong-Woo Lee | 2003-04-08 |
| 6533957 | Piezoelectric ceramic composition, and high power output transformer made of the same composition | Jong Sun Kim, Joo Hyun Yoo, Yong-Woo Lee | 2003-03-18 |
| 6509699 | Digital controlled electronic ballast with piezoelectric transformer | Jong Soo Kim, Sang Hyun Lee, Jong Sun Kim, Jong-Man Jung | 2003-01-21 |