Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7594842 | Cassette assembly for manufacturing fluorescent lamps | Young-Chul Lee, Sung Jung Kim | 2009-09-29 |
| 7586045 | Method for fabricating electrode of external electrode fluorescent lamp and external electrode fluorescent lamp having electrode fabricated by the method | Young-Chul Lee, Sung Jung Kim, Sung-Hae Kim | 2009-09-08 |
| 7455733 | Fluorescent material coating apparatus and method of coating fluorescent substance using the same | Young-Chul Lee, Sung Jung Kim, Jeon-Gu Kim, Hong-Lae Cho | 2008-11-25 |
| 5858026 | Dicyclic metal complex formazan derivatives, process for producing the same, composition containing the same and dyeing process employing the same | Sung-Yong Cho | 1999-01-12 |