Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11134333 | Multi-range speaker containing multiple diaphragms | Youngil Cho, Christian Femrite | 2021-09-28 |
| 11044562 | Multi-diaphragm speaker driven by multiple voice coil plates and a shared permanent magnet pair | Youngil Cho, Darrell Seyler Adams | 2021-06-22 |
| 10999673 | Thin speaker with curved or angled structure | Youngil Cho, Christian Femrite | 2021-05-04 |