Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6448856 | Electronic volume circuit | Nobuaki Tsuji | 2002-09-10 |
| 6445320 | A/D conversion apparatus | Akira Sogo, Ryo Kamiya | 2002-09-03 |
| 6437719 | Delta-sigma modulator for power amplification of audio signals | Makoto Kaneko | 2002-08-20 |
| 6428671 | Method and apparatus for electro-coagulation printing and electrode control unit | Akira Sogo, Kunimasa Muroi, Koji Toda | 2002-08-06 |