Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5168500 | Method for automatically discriminating low-speed interface units installed in an optical data transmission apparatus together with automatically confirming the installation | Kanji Naito, Kazuhiko Taniguchi | 1992-12-01 |
| 5109296 | Transmission line switching system | Takeo Fukushima, Kohichi Nishimura | 1992-04-28 |
| 5091796 | Optical communication system having an improved protection line switching mechanism | Koichi Nishimura, Ikuo Taniguchi, Fumihiro Ikawa | 1992-02-25 |