Issued Patents All Time
Showing 25 most recent of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10469170 | Optical transceiver, optical transmitter IC, and optical receiver IC | — | 2019-11-05 |
| 10250333 | Optical communication system and optical transmitter | — | 2019-04-02 |
| 10187158 | Optical communication system and optical transmitter | — | 2019-01-22 |
| 9485032 | Optical multilevel transmitter and optical transponder | Yuki WAKAYAMA | 2016-11-01 |
| 9467245 | Polarization multiplexing optical transceiver | — | 2016-10-11 |
| 9178617 | Optical multilevel signal pre-equalization circuit, optical multilevel signal pre-equalization transmitter, and polarization-multiplexed pre-equalization transmitter | — | 2015-11-03 |
| 9143265 | Optical polarization multilevel signal receiving apparatus, optical polarization multilevel signal transmitting apparatus, and optical polarization multilevel signal transmission apparatus | — | 2015-09-22 |
| 9143846 | Wavelength-multiplexed optical transmission device, wavelength-multiplexed optical transmission system, wavelength-multiplexed optical transmission method | — | 2015-09-22 |
| 9046653 | PDL compensator optical device, and PDL compensation method | Kohei Mandai | 2015-06-02 |
| 8873968 | Optical field receiver, optical multilevel signal receiver, and optical transmission system | — | 2014-10-28 |
| 8855503 | Optical receiver and optical transmission system | — | 2014-10-07 |
| 8805188 | Polarization-multiplexed optical transmission system, polarization-Multiplexed optical transmitter, and polarization-multiplexed optical receiver | — | 2014-08-12 |
| 8693886 | Optical transmission system | — | 2014-04-08 |
| 8655193 | Optical multi-level transmission system | — | 2014-02-18 |
| 8520196 | Optical communication module and optical fiber communication system | Riu Hirai, Tetsuya Uda, Shinya Sasaki | 2013-08-27 |
| 8503887 | Pre-equalized optical transmitter and pre-equalized optical transmission system | — | 2013-08-06 |
| 8483573 | Optical transmission and reception system, and optical receiver | Hideaki KOTAKE, Kohei Mandai | 2013-07-09 |
| 8472807 | Optical field transmitter and optical transmission system | — | 2013-06-25 |
| 8417126 | Polarization multiplexing transmitter and transmission system | Kohei Mandai, Shinya Sasaki | 2013-04-09 |
| 8340533 | Optical balanced receiver and IQ receiver with balanced compensation | Kohei Mandai | 2012-12-25 |
| 8265489 | Optical field transmitter and optical field transmission system | — | 2012-09-11 |
| 8184992 | Optical field receiver and optical transmission system | — | 2012-05-22 |
| 8095018 | Quaternary phase modulator | Kenro Sekine, Shinya Sasaki | 2012-01-10 |
| 7978390 | Optical modulator | — | 2011-07-12 |
| 7903975 | Optical add-drop multiplexer | Shinya Sasaki, Kenro Sekine | 2011-03-08 |