Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5142959 | Midi control apparatus and midi system | Masaharu Sakamoto, Shigeru Yamaguchi, Kazuhiko Mukai, Yukio Matsumoto, Shinji Suzuki +3 more | 1992-09-01 |
| 4540951 | Amplifier circuit | Akio Ozawa, Susumu Sueyoshi, Keishi Sato, Kikuo Ishikawa, Satoshi Ishii +1 more | 1985-09-10 |
| 4433305 | Amplifier circuit | Akio Ozawa, Susumu Sueyoshi, Keishi Sato, Kikuo Ishikawa, Satoshi Ishii +1 more | 1984-02-21 |
| 4356455 | Amplifier | Akio Ozawa, Susumu Sueyoshi, Keishi Saito, Kikuo Ishikawa, Satoshi Ishii +1 more | 1982-10-26 |