Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10139750 | Developing cartridge, developing apparatus and image forming apparatus having the same | Ho-jin Jang, Seong-woong Yang, Woong-Yong Choi, Jin Hwa Hong | 2018-11-27 |
| D833519 | Cartridge | Seong-woong Yang, Yun-Kyu Shim, Sang Hoon Lee, Seung-gweon Lee, Ho-jin Jang +2 more | 2018-11-13 |
| D833520 | Cartridge | Seong-woong Yang, Yun-Kyu Shim, Sang Hoon Lee, Seung-gweon Lee, Ho-jin Jang +2 more | 2018-11-13 |
| D832340 | Cartridge | Seong-woong Yang, Yun-Kyu Shim, Sang Hoon Lee, Seung-gweon Lee, Ho-jin Jang +2 more | 2018-10-30 |