Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9918157 | Headphone type acoustic apparatus and control method therefor | Jo Kamada, Atsuto Ohashi, Asako Kawamura | 2018-03-13 |
| 9693129 | Headphone type acoustic apparatus | Jo Kamada, Atsuto Ohashi, Asako Kawamura | 2017-06-27 |