Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9512549 | Washing machine using ultrasonic vibrations | Dae Yeong Im, Hyun Rok Cha, Hyoung Uk Nam, Chang Youn Kang | 2016-12-06 |
| 8276877 | Solenoid valve controlled by wireless communication | Hyun Rok Cha, Sung Ho Lee, Dae Yeong Im, Ik Hyun Oh | 2012-10-02 |