Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11039236 | Ear pad and earphone using the same | Kohei Osugi, Takafumi Koshinaka | 2021-06-15 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11039236 | Ear pad and earphone using the same | Kohei Osugi, Takafumi Koshinaka | 2021-06-15 |