Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7138994 | Energy recovering circuit with boosting voltage-up and energy efficient method using the same | Jang Hwan Cho, Nam Kyu Lee, Cheul-U Kim, Eung Kwan Lee, Jae Hwa Ryu +1 more | 2006-11-21 |
| 7009823 | Energy recovery circuit and energy recovery method using the same | Won Sik YOON, Han Woong Park, Cheul-U Kim | 2006-03-07 |