Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5732390 | Speech signal transmitting and receiving apparatus with noise sensitive volume control | Kentaro Odaka, Masayuki Nishiguchi | 1998-03-24 |
| 5687285 | Noise reducing method, noise reducing apparatus and telephone set | Masayuki Nishiguchi | 1997-11-11 |