Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11114071 | Percussion instrument | Ryuji Hashimoto, Noritaka Nagai | 2021-09-07 |
| 11094302 | Effect imparter for musical instrument | — | 2021-08-17 |
| 10984760 | Musical instrument and vibrator | Masatsugu Okazaki, Ichiro Osuga, Shinji SUMINO, Takuya Abe, Takashi KITAGAWA | 2021-04-20 |
| 10891923 | Vibrator and musical instrument | Masatsugu Okazaki, Ichiro Osuga, Shinji SUMINO, Takashi KITAGAWA, Takuya Abe | 2021-01-12 |