Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11049677 | Inverse current injection-type direct current blocking device and method using vacuum gap switch | Woo Young Lee, Hae Yong PARK, Gyeong Ho Lee, Sang-Hun Park, Chae-Yoon BAE +1 more | 2021-06-29 |