Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10477295 | Earphone | Takashi Ouchi, Masanori Ito, Naoki Imagawa | 2019-11-12 |
| 10419845 | Headphones and speaker unit | Shun Muramoto, Takashi Ouchi | 2019-09-17 |
| 5878149 | Loudspeaker having a yoke, magnet, cylindrical throat, and spacer plate configuration | Hiroyuki Hamada, Yasushi Tanaka, Toru Iwazumi | 1999-03-02 |