Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10306353 | Acoustic impedance matching device and loudspeaker provided with such a device | — | 2019-05-28 |
| 9633648 | Loudspeaker membrane and method for manufacturing such a membrane | Bruno De La Nouvelle | 2017-04-25 |
| 8160260 | Circuit and program for processing multichannel audio signals and apparatus for reproducing same | Kei Sakagami, Ikuko Kawamura | 2012-04-17 |
| RE42390 | Sound signal playback machine and method thereof | Hiroyuki Hamada | 2011-05-24 |
| 7457421 | Circuit and program for processing multichannel audio signals and apparatus for reproducing same | Kei Sakagami, Ikuko Kawamura | 2008-11-25 |
| 6804361 | Sound signal playback machine and method thereof | Hiroyuki Hamada | 2004-10-12 |