Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771907 | Optical ring system | Yuuki Yoshifuji, Shuichi Iida, Takashi Yamazaki, Youko Nakabayashi, Shinya Nakamura +9 more | 2004-08-03 |
| 5657134 | Digital circuit multiplier equipment for handling of facsimile signals by addition of controlled variable delay to facsimile control channel signals | Yoshiaki Numata | 1997-08-12 |
| 5315704 | Speech/voiceband data discriminator | Shinichi Aikoh, Takao Nishitani | 1994-05-24 |