Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4622537 | Predictive code conversion method capable of forcibly putting a feedback loop in an inactive state | — | 1986-11-11 |
| 4554670 | System and method for ADPCM transmission of speech or like signals | Rikio Maruta, Takao Nishitani | 1985-11-19 |