Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5929218 | Pyridone-based yellow monoazo dye for use in thermal transfer and ink compositions comprising same | Ki Taek Lee, Young Seup Son, Woo Sok Han, Beom Jun Joo | 1999-07-27 |
| 5512664 | Monoazo dye for thermal transfer printing | Ki Taek Lee, Young-soup Son, Woo-Seok Han | 1996-04-30 |