Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12315481 | Keyboard instrument | Shingo FUKUSHIMA, Kouji OSHIMA, Yuuki NAKAJIMA, Mari NAKAJIMA, Ryohei KOBAYASHI | 2025-05-27 |
| 11694664 | Keyboard musical instrument | Ryohei KOBAYASHI, Kouji OSHIMA, Yuuki NAKAJIMA, Shingo FUKUSHIMA, Mari NAKAJIMA | 2023-07-04 |
| 11670269 | Keyboard instrument | So SATO, Naoya ISHIBASHI, Kouji OSHIMA | 2023-06-06 |
| 11594205 | Switch device, electronic apparatus, and electronic musical instrument | Kouji OSHIMA, Yuuki NAKAJIMA, Mari NAKAJIMA, Ryohei KOBAYASHI, Shingo FUKUSHIMA | 2023-02-28 |
| 11107449 | Keyboard instrument | So SATO, Naoya ISHIBASHI, Kouji OSHIMA | 2021-08-31 |
| 10529304 | Lid opening and closing apparatus and keyboard instrument | Ryohei Kawada | 2020-01-07 |
| 9994060 | Page pressing apparatus and document camera system | Shota Yamada | 2018-06-12 |