Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7718803 | Self-dispersible bipyridine-based metal complex and ink composition comprising the same | Jong-In Lee, Seung-min Ryu | 2010-05-18 |
| 7446135 | Block copolymeric dispersant for pigment particle in aqueous system, and ink composition comprising the same | Cheol Ham, Seung-min Ryu | 2008-11-04 |
| 7396398 | Ink composition | Jong-In Lee, Seung-min Ryu | 2008-07-08 |
| 7396399 | Bipyridine-based metal complex and ink composition comprising the same | Jong-In Lee, Seung-min Ryu | 2008-07-08 |
| 7393403 | Process for preparing self-dispersible coloring agent using lewis acids and ink composition comprising the coloring agent | Jong-In Lee, Seung-min Ryu | 2008-07-01 |