Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5255215 | Digital filter system with changeable cutoff frequency | Kikuji Tanaka, Kohtaro Hanzawa, Ryutaro Hayashi | 1993-10-19 |
| 5243658 | Modulation effect adding apparatus | — | 1993-09-07 |
| 5166464 | Electronic musical instrument having a reverberation | Akio Iba | 1992-11-24 |
| 5140541 | Digital filter system with changeable cutoff frequency | Kikuji Tanaka, Kohtaro Hanzawa, Ryutaro Hayashi | 1992-08-18 |
| 4998281 | Effect addition apparatus | — | 1991-03-05 |