Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890170 | Waveform equalization circuit for a magnetic reproducing device | Haruyuki Inohana, Hideaki Takada | 1989-12-26 |
| 4540897 | Digital modulation signal reading device | Ryuichi Naito, Fumihiko Yokogawa, Youichi Ogawa | 1985-09-10 |
| 4328465 | Tone control circuit utilizing variable gain amplifier | Ryozi Higashi, Hiroyuki Hirano | 1982-05-04 |
| 4289928 | Tone control arrangement for use in sound reproducing instruments | Ryozi Higashi | 1981-09-15 |
| 4245245 | Interactive CATV system | Katsuaki Matsumoto, Yoshifumi Saeki, Osamu Tazawa, Minoru Kosaka, Masaki Saito +13 more | 1981-01-13 |
| 4210828 | Device for improving output waveform of manually controllable pulse generator for use in preset electronic tuning control device | Youichiro Tsuda | 1980-07-01 |
| 4197508 | Period-to-voltage converting device | — | 1980-04-08 |