Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8710702 | Regenerative power storage system mounted on DC electric railway car | Han-Min Lee, Chang-Mu Lee, Sung-Kyou Choi | 2014-04-29 |
| 7042691 | Electrical inertial load controlling apparatus having gate drive for protecting IGBT | Young Jae Han, Hyun Jun Park, Sung-Kyou Choi, Jung Min Cho | 2006-05-09 |