Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10250322 | Transmission system, transmission device, and transmission method | Shingo Hironaka | 2019-04-02 |
| 9831976 | Optical transmission apparatus, optical transmission system, and transmission wavelength control method | Yoshinori Tochiki, Taku Saito | 2017-11-28 |
| 9588297 | Wavelength selective switch, variable dispersion compensator, optical transmission apparatus, and optical transmission system | Ichiro Nakajima | 2017-03-07 |
| 7174108 | Transmission device and repeater | — | 2007-02-06 |
| 6754172 | Non-interruptive protection switching device and network system using the same | Masayuki Tanaka, Masaki Kubo, Satoshi Nemoto, Shuji Sakakura, SHIGEO HANDA | 2004-06-22 |
| 6400614 | Transmission device and integrated circuit | Masaki Hiromori, Seiji Matsuzaki, Toshiaki Asai, Yoshinari Oshio, Masato Hashizume +1 more | 2002-06-04 |