Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9954392 | Energy storage system (ESS) using uninterruptible power supply (UPS) | In Chol Yeon, Kwan Bok Lee, Kwang Ho Lee, Eun Ki Jeong, Chung Hyun Jung | 2018-04-24 |
| 9859751 | Switchable uninterruptible power supply system and battery charging method thereof | Dong Young Shin, In Chol Yeon, Byeong Gyu HYEON | 2018-01-02 |
| 9843222 | Uninterruptible power supply system for preventing charging of batteries and method for controlling uninterruptible power supply system | In Chol Yeon, Dong Young Shin, Byeong Gyu HYEON | 2017-12-12 |