Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12381053 | Vacuum circuit breaker | Hyunwook Lee | 2025-08-05 |
| 10424442 | Arc eliminator | — | 2019-09-24 |
| 10163587 | Interlock device of withdrawable arc eliminator | Hyunwook Lee, Seogwon Lee, Youngwoo Jeong | 2018-12-25 |