Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5737373 | Control method and apparatus for suppressing jitter | Sakutaro Sato | 1998-04-07 |
| 5406255 | Duplexed communication system | Sakutaro Sato | 1995-04-11 |
| 5327275 | Switching system of optical transmission lines for protecting from trouble | Kazuo Yamane, Takashi Kihara, Takeo Fukushima, Koichi Nishimura, Hatsumi Iino | 1994-07-05 |
| 5134609 | Drop/insert channel selecting system | Masakazu Mori, Masanori Arai, Kazuo Takatsu, Nobuhide Yamaguchi | 1992-07-28 |
| 5014271 | Pulse insertion circuit | Yukio Suda, Katsutoshi Miyaji | 1991-05-07 |
| 4885746 | Frequency converter | Takeo Fukushima, Masami Mizuguchi, Takahiro Furukawa, Yoshiaki Yato, Kenji Sato +1 more | 1989-12-05 |
| 4811341 | Hierarchical data transmission system | Takashi Yorita, Yoshiaki Yato, Yoshinori Nakamura, Kenji Satoh | 1989-03-07 |
| 4754456 | Multiplex system for replacing a faulty multiplexer output with an alternating pattern signal | Yoshiaki Yato, Takeo Fukushima | 1988-06-28 |
| 4748623 | Frame synchronizing circuit | — | 1988-05-31 |
| 4727541 | Hierarchical data transmission system | Masakazu Mori, Takeo Fukushima | 1988-02-23 |