Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12244989 | Headphone structure | — | 2025-03-04 |
| D1008215 | Headphone | Yutaro Kumagai | 2023-12-19 |
| D1003855 | Headphone | Yutaro Kumagai | 2023-11-07 |
| D1003854 | Headphone | Yutaro Kumagai | 2023-11-07 |
| D997122 | Speaker pattern for a headphone | Yutaro Kumagai | 2023-08-29 |
| D997123 | Headphone headband support | Yutaro Kumagai | 2023-08-29 |
| D878336 | Earphone | Toru Fusejima, Tsutomu Takeshita | 2020-03-17 |