Issued Patents 2019
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10491161 | Apparatus for and method of a supply modulator for a power amplifier | Yong Sik Youn, Ji-seon Paek, Thomas Byunghak Cho | 2019-11-26 |
| 10341753 | Earring-type microphone | — | 2019-07-02 |
| 10321218 | Ear device for fixing earphone | — | 2019-06-11 |
| 10283766 | Negative electrode active material for lithium secondary battery | Cheol Park, Seon Kyong Kim, Young Pil Choi, Hyang Yeon Kim, Jae Woong Kim +1 more | 2019-05-07 |
| D842277 | Ear-mounted device | — | 2019-03-05 |
| 10206491 | Ear instrument to which various instruments and accessories can be fixed | — | 2019-02-19 |