Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12413896 | Two-way speaker | Chan Ho Jeong, Byung Min Yu | 2025-09-09 |
| 12137311 | Earphone with duct unit dividing pressure equilibrium hole and back hole | Jun Hee HAN, Yong Ju Ji | 2024-11-05 |
| 11363370 | Receiver module integrated with duct | Yong Ju Ji, Jun Hee HAN | 2022-06-14 |
| 11212616 | Bonding structure of diaphragm for receiver | Ji Hoon Kim, Young Woo Kim, Yong Ju Ji, Chan Ho Jeong | 2021-12-28 |
| 9923453 | Power management device for energy harvesting | Sang-Gug Lee, Baek-Min Lim, Jeong-Il Seo, Hyun-Mo Gu | 2018-03-20 |