Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7348118 | Non-magnetic monocomponent toner having excellent developing property at low temperature condition | Won-Sup Lee, Chang-Soon Lee | 2008-03-25 |
| 7252915 | Magnetic mono-component toner composition | Won-Sup Lee, Chang-Soon Lee | 2007-08-07 |
| 7070895 | Magnetic toner composition having superior electrification homogeneity | Chang-Soon Lee, Won-Sup Lee | 2006-07-04 |