Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8170236 | Pitch detection apparatus and method | Kiyoto Kuroiwa | 2012-05-01 |
| 6351540 | Digital echo circuit | Satoshi Suzuki | 2002-02-26 |
| 6036498 | Karaoke apparatus with aural prompt of words | — | 2000-03-14 |
| 5902951 | Chorus effector with natural fluctuation imported from singing voice | Yuji Ikegaya, Yasuo Yoshioka | 1999-05-11 |
| 4587620 | Noise elimination device | Koji Niimi | 1986-05-06 |
| 4244257 | Wave-shape generator for electronic musical instruments | Koji Niimi, Shigeo Ando | 1981-01-13 |