Issued Patents 2024
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11980915 | Ultrasonic transmission structure | Jong Jin Park, Kyung Jun Song, Hak Joo Lee | 2024-05-14 |
| 11979710 | Holographic-based directional sound device | Kyungjun Song, Hak Joo Lee, Jong Jin Park | 2024-05-07 |
| 11893971 | Sound insulation plate and sound insulation structure using the same | Jong Jin Park, Hak Joo Lee | 2024-02-06 |