Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5131309 | Performance recording/reproducing apparatus enabling correction or modification of playing information | Hiroshi Nishikawa | 1992-07-21 |
| 4982642 | Metronome for electronic instruments | Hiroshi Nishikawa | 1991-01-08 |