Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8093478 | Percussion instrument and electronic percussion instrument | — | 2012-01-10 |
| 7642440 | Percussion instrument and electronic percussion instrument | — | 2010-01-05 |
| D597587 | Electronic piano | Keizo Tatsumi | 2009-08-04 |