Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7358633 | Linear vibration motor using resonance frequency | II Oung Park, Yeon Ho Son, Joon Choi, Hwa Young Oh | 2008-04-15 |
| 6836039 | Brushless vibration motor | Tae Young Choi, Hwa Young Oh | 2004-12-28 |