Issued Patents All Time
Showing 26–50 of 74 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8731409 | Method for controlling polarization multiplexed optical signal | Noriaki Mizuguchi | 2014-05-20 |
| 8582980 | Optical device and optical modulation method | Masato Nishihara, Tomoo Takahara, Masahiro Yuki | 2013-11-12 |
| 8582981 | Optical transmitter and control method therefor | Hideyuki Miyata, Toshiki Tanaka, Masato Nishihara | 2013-11-12 |
| 8565616 | Polarized-wave-multiplexing optical transmitter and control method of polarized-wave-multiplexed optical signal | Toshiki Tanaka, Masato Nishihara | 2013-10-22 |
| 8472810 | Optical signal transmitter and method for controlling polarization multiplexed optical signal | Noriaki Mizuguchi | 2013-06-25 |
| 8457503 | Optical transmitter apparatus | — | 2013-06-04 |
| 8412047 | Polarization multiplexed light transmitter and control method thereof | Toshiki Tanaka, Masahiro Yuki, Hideyuki Miyata | 2013-04-02 |
| 8400702 | Optical modulation device and optical modulation method | Toshiki Tanaka, Hideyuki Miyata, Takeshi Hoshida | 2013-03-19 |
| 8364038 | Polarization multiplexed optical transmitter and method for controlling polarization multiplexed optical signal | Noriaki Mizuguchi | 2013-01-29 |
| 8285152 | DQPSK optical receiver | Toshiki Tanaka | 2012-10-09 |
| 8249464 | Optical receiver and method for optical reception | Shoichiro Oda, Takeshi Hoshida, Hisao Nakashima, Takahito Tanimura | 2012-08-21 |
| 8165465 | Apparatus and method of controlling tap coefficient of transversal filer, optical receiver apparatus, and optical communication system | Toshiki Tanaka | 2012-04-24 |
| 8145071 | Electrical-dispersion compensating apparatus, optical receiving apparatus, and optical receiving method | Toshiki Tanaka, Tomoo Takahara | 2012-03-27 |
| 8145069 | Optical transmitter | Toshiki Tanaka, Takeshi Hoshida, Hisao Nakashima | 2012-03-27 |
| 8145072 | DQPSK optical receiver | Toshiki Tanaka | 2012-03-27 |
| 8131152 | Optical add/drop multiplexer | Takafumi Terahara, Hiroki Ooi, Jens Rasmussen, Akira Miura, Akihiko Isomura | 2012-03-06 |
| 8121492 | Optical transmitting apparatus | Hideyuki Miyata, Noriaki Mizuguchi | 2012-02-21 |
| 7945173 | Control apparatus and control method for optical modulator | Hiroki Ooi | 2011-05-17 |
| 7936998 | Optical transmitter apparatus | — | 2011-05-03 |
| 7933519 | Optical cross-connect using wavelength selective switches | Takafumi Terahara, Hiroki Ooi | 2011-04-26 |
| 7907324 | Optical modulator and controlling method and apparatus thereof | Takeshi Hoshida | 2011-03-15 |
| 7873283 | Method of monitoring optical signal to noise ratio and optical transmission system using the same | Takafumi Terahara | 2011-01-18 |
| 7853148 | Optical add/drop multiplexer | Takafumi Terahara, Hiroki Ooi, Jens Rasmussen, Akira Miura, Akihiko Isomura | 2010-12-14 |
| 7848659 | Optical transmitting apparatus and optical communication system | Akira Miura, Kentaro Nakamura, Hiroshi Onaka, Hiroki Ooi, Jens Rasmussen +1 more | 2010-12-07 |
| 7817923 | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them | Takeshi Hoshida, Yutaka Kai, Hiroki Ooi, Kentaro Nakamura, Naoki Kuwata +3 more | 2010-10-19 |