Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7998648 | Electrophotographic developing agent | Sang-deok Kim, Seok-Hoon Choi, Ki-won Seok | 2011-08-16 |
| 7871749 | Electrophotographic developing agent | Seok-Hoon Choi, Sang-deok Kim, Ki-won Seok | 2011-01-18 |