Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6245983 | Performance training apparatus, and recording mediums which prestore a performance training program | — | 2001-06-12 |
| 6180865 | Melody performance training apparatus and recording mediums which contain a melody performance training program | — | 2001-01-30 |
| 5546466 | Effect adding apparatus | Masatoshi Watanuki, Toshiaki Kawanishi, Kohtaro Hanzawa, Hiroyuki Sasaki, Jun Yoshino | 1996-08-13 |
| 5410603 | Effect adding apparatus | Masatoshi Watanuki, Toshiaki Kawanishi, Kohtaro Hanzawa, Hiroyuki Sasaki, Jun Yoshino | 1995-04-25 |
| 5223659 | Electronic musical instrument with automatic accompaniment based on fingerboard fingering | Kazuyoshi Shiraki, Akinori Matsubara | 1993-06-29 |
| 5085120 | Electronic stringed musical instrument with parameter selecting function | — | 1992-02-04 |
| 4966052 | Electronic musical instrument | Kazuyoshi Shiraki, Akinori Matsubara | 1990-10-30 |