Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9859751 | Switchable uninterruptible power supply system and battery charging method thereof | Dong Young Shin, Bon Jun Koo, In Chol Yeon | 2018-01-02 |
| 9843222 | Uninterruptible power supply system for preventing charging of batteries and method for controlling uninterruptible power supply system | In Chol Yeon, Bon Jun Koo, Dong Young Shin | 2017-12-12 |