Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6800381 | Fluorene compound, polymers thereof having a polyphenylene group, and EL element comprising the same | Hyun-Nam Cho, Sang Won Son, Jong Bok Kim | 2004-10-05 |
| 6780950 | Pyrrole compounds, polymers thereof and EL element using the same | Hyun-Nam Cho, Sang Won Son, Jae Hong Won | 2004-08-24 |