Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9219971 | Method of manufacturing a piezoelectric speaker | Hye Jin Kim, Sung Q Lee, Hong Yeol Lee, Kang Ho Park, Jong Dae Kim | 2015-12-22 |
| 8335329 | Piezoelectric speaker and method of manufacturing the same | Hye Jin Kim, Sung Q Lee, Hong Yeol Lee, Kang Ho Park, Jong Dae Kim | 2012-12-18 |