Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5289539 | Echo canceller using impulse response estimating method | — | 1994-02-22 |
| 4741025 | Speech additive distribution equipment for conferencing system | Hitoshi Fuda, Hidetoshi Mori, Hidetoshi Miura | 1988-04-26 |
| 4719618 | Digital conference circuit | Yasuo Itoh | 1988-01-12 |