Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9578431 | Audio output apparatus capable of controlling temperature of voice coil and method thereof | Jong Woo Kim, Kee-yeong CHO | 2017-02-21 |
| 8565441 | Method and apparatus for reducing resonance of loudspeaker | — | 2013-10-22 |
| 6525457 | Tensioned shadow mask assembly for flat cathode ray tube | Do-hoon Peen, Sung-oh Rho | 2003-02-25 |