Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378137 | Ammonia stripping device, and resource recovery type high concentration wastewater treatment system using the same | Cheol-Woo Park | 2025-08-05 |
| 10533465 | Variable valve lift actuator of engine | Wan Jae Jeon, Soo Hyun HWANG, Jong Wung Park, Chan Wung Park, Dong Hyeong Lee | 2020-01-14 |
| 10450903 | Variable valve lift actuator of engine | Wan Jae Jeon, Soo Hyun HWANG, Jong Wung Park, Chan Wung Park, Dong Hyeong Lee | 2019-10-22 |
| D624106 | Motor vehicle surveillance camera | Cheong Dong Cho | 2010-09-21 |
| 6948176 | Cover plate for optical disk drive | Eun-hyoung Cho, Jin-seung Sohn | 2005-09-20 |
| 6859933 | Dynamic vibration absorber for a disk player | Young-won Lee, Young-sun Seo | 2005-02-22 |
| 6532210 | Disk-type recording medium having a crack hindering element | — | 2003-03-11 |