Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10078069 | Device for detecting change in underground medium | Sung Q Lee, WooSub YOUM | 2018-09-18 |
| 10008888 | Wireless power transmission system calculating the battery charge state of the receiver based on the supply impedance of the power source and the summed impedance of the wireless transmitter, wireless receiver, medium therebetween, and battery charge circuit | WooSub YOUM, Sung Q Lee | 2018-06-26 |