Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5978487 | Spectrum displaying device for audio device | — | 1999-11-02 |
| 5644217 | Emitter coupled logic output circuit | — | 1997-07-01 |
| 5483197 | Power amplifier circuit for audio signal and audio device using the same | Kei Nishioka, Masanori Fujisawa | 1996-01-09 |
| 5479134 | Power amplifier circuit for audio signal and audio device using the same | Kei Nishioka, Masanori Fujisawa | 1995-12-26 |