Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7228075 | Wavelength multiplexing apparatus and signal conversion apparatus | Takeshi Ono, Kazuhiro Kunimatsu, Tadashi Soga | 2007-06-05 |
| 7103274 | Cross-connect apparatus | Kazuhiro Kunimatsu, Akio Takayasu, Yukiko Miyazaki | 2006-09-05 |
| 6418116 | Transmission system having an uninterrupted switchover function for a plurality of lines | — | 2002-07-09 |
| 6163526 | Transmission system for switching connection from a working channel line to a protection channel line while avoiding instantaneous cutoff upon failure | — | 2000-12-19 |
| 5870403 | Apparatus and a method for establishing signal synchronization between lines | — | 1999-02-09 |
| 5805601 | System for controlling signal transfer between a plurality of devices | Shinichi Takeda, Yoshinobu Matsukawa | 1998-09-08 |