Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10530134 | Switchgear | Ji Ma, Jong Doo Kim | 2020-01-07 |
| 10468861 | Distribution panel | Seog Won LEE, Ji Ma, Jong Doo Kim | 2019-11-05 |
| 9685282 | Door interlock device for vacuum circuit breaker | Kil Young Ahn, Dae Soo Han, Seung Pil Yang | 2017-06-20 |
| 9679722 | Interlock apparatus of vacuum circuit breaker | Dae Soo Han, Kil Young Ahn, Seung Pil Yang | 2017-06-13 |
| 9620938 | Switchboard applied with bushing-type current transformer | Seung Pil Yang, Kil Young Ahn, Dae Soo Han, Jong Doo Kim | 2017-04-11 |
| 9425590 | Withdrawable-type circuit breaker | Jun Youn Jo, Hong Ik Yang, Kil Young Ahn, Seung Pil Yang | 2016-08-23 |