Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641930 | Electronic musical apparatus for controlling musical tone using initial touch information | Akira Nakada, Takeo Shibukawa | 1997-06-24 |
| 5552561 | Playing-style detecting apparatus and electronic musical instrument utilizing the same | Akira Nakada, Takeo Shibukawa, Junichi Mishima | 1996-09-03 |