Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9525955 | Digital speaker system and electrical connection method for digital speaker system | — | 2016-12-20 |
| 9451365 | Voice coil speaker | Naoki Takada, Hiroyuki Tanaka, Kenji Kono | 2016-09-20 |
| 7722116 | Acoustic seat vibratory-bone-conduction type | Naoki Takada, Masateru Hashimoto, Masahiro Matsuhashi | 2010-05-25 |