Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8818190 | Optical transport system and optical node | Yukio Hayashi, Yoshiyuki Niwa, Shuuji Furumoto | 2014-08-26 |
| 8095018 | Quaternary phase modulator | Nobuhiko Kikuchi, Shinya Sasaki | 2012-01-10 |
| 8090269 | Data transmission system and transmission code generating method for the same | Hidehiro Toyoda, Shinya Sasaki, Shinji Nishimura | 2012-01-03 |
| 7991290 | Optical prism and optical transceiver module for optical communications | Ken'ichi Tanaka, Masato Shishikura, Toshiki Sugawara, Yasunobu Matsuoka | 2011-08-02 |
| 7903975 | Optical add-drop multiplexer | Shinya Sasaki, Nobuhiko Kikuchi | 2011-03-08 |
| 7653310 | Wavelength division multiplex (WDM) transmission system | — | 2010-01-26 |
| 7653311 | Optical wavelength add-drop multiplexer | Nobuhiko Kikuchi, Shinya Sasaki | 2010-01-26 |
| 7526199 | Optical transmission equipment preventing malfunction in recovery from fault | Junya Kosaka, Tadashi Matsuoka | 2009-04-28 |
| 7457494 | Dispersion compensator, optical transmission system and optical transmission method | — | 2008-11-25 |
| 7457542 | Optical access network system | Nobuaki Tajimi | 2008-11-25 |
| 7302183 | Gain tilt compensators and their systems | — | 2007-11-27 |