Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5600755 | Voice codec apparatus | Takahiko Nakano | 1997-02-04 |
| 5343420 | Signal discrimination circuit | Yasumoto Murata, Michio Ikeuchi | 1994-08-30 |
| 5140612 | Modem for use in a data communication system | — | 1992-08-18 |
| 5117369 | DTMF receiver | — | 1992-05-26 |
| 5113142 | QAM demodulator having automatic adaptive equalizer | — | 1992-05-12 |
| 5057786 | Quadrature amplitude modulation wave demodulator provided with band-pass filters for fixed equalizer | — | 1991-10-15 |