Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9509412 | Optical communication system, method for controlling optical communication, and optical transmitter | Toshiki Tanaka | 2016-11-29 |
| 9467229 | Multilevel intensity modulation and demodulation system and method | Yutaka Kai, Masato Nishihara, Toshiki Tanaka | 2016-10-11 |
| 9425897 | Transmission apparatus, transmission system, and transmission method | Masato Nishihara, Toshiki Tanaka, Yutaka Kai | 2016-08-23 |
| 9184867 | Transmission control device, transmission system, and transmission method | Masato Nishihara, Toshiki Tanaka | 2015-11-10 |
| 9118436 | PON system and subcarrier assigning method | Masato Nishihara, Toshiki Tanaka | 2015-08-25 |
| 9088383 | Transmitting apparatus, receiving apparatus, optical frequency division multiplex transmission system, and optical signal communication method | Toshiki Tanaka, Masato Nishihara, Tomoyuki Kato, Yutaka Kai, Shigeki Watanabe | 2015-07-21 |
| 8867927 | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them | Yuichi Akiyama, Takeshi Hoshida, Akira Miura, Yutaka Kai, Hiroki Ooi +5 more | 2014-10-21 |
| 8849128 | Multi-wavelength light source | Shoichiro Oda, Takeshi Hoshida, Toshiki Tanaka, Takahito Tanimura | 2014-09-30 |
| 8818207 | Optical transmitter | Toshiki Tanaka, Shoichiro Oda, Takeshi Hoshida | 2014-08-26 |
| 8705981 | Driver circuit of optical modulator | Takeshi Hoshida, Hisao Nakashima | 2014-04-22 |
| 8693891 | Optical modulation apparatus and optical modulation method | Masato Nishihara, Takeshi Hoshida | 2014-04-08 |
| 8670680 | Optical receiver and optical receiving method | Toshiki Tanaka | 2014-03-11 |
| 8670674 | Optical transmitter and method for controlling the same | — | 2014-03-11 |
| 8666252 | Optical network system | Masato Nishihara, Toshiki Tanaka | 2014-03-04 |
| 8611760 | Optical modulation device and optical modulation method | Masato Nishihara | 2013-12-17 |
| 8582980 | Optical device and optical modulation method | Masato Nishihara, Yuichi Akiyama, Masahiro Yuki | 2013-11-12 |
| 8565615 | Optical modulation apparatus and optical modulation method | Masato Nishihara, Takeshi Hoshida | 2013-10-22 |
| 8565617 | Optical device, optical modulation method, and optical transmitter | Masato Nishihara, Toshiki Tanaka | 2013-10-22 |
| 8466719 | Frequency doubler, signal generator, optical transmitter, and optical communication apparatus | — | 2013-06-18 |
| 8326145 | Optical receiver and light receiving method | — | 2012-12-04 |
| 8306431 | Optical transmission system | — | 2012-11-06 |
| 8301039 | Delay processing apparatus, signal amplification apparatus, opto-electric conversion apparatus, analog-digital conversion apparatus, receiving apparatus, and receiving method | Masato Nishihara, Hisao Nakashima | 2012-10-30 |
| 8145071 | Electrical-dispersion compensating apparatus, optical receiving apparatus, and optical receiving method | Toshiki Tanaka, Yuichi Akiyama | 2012-03-27 |
| 8005372 | Differential M phase shift keying optical receiving circuit | — | 2011-08-23 |
| 7936993 | Chromatic dispersion compensating apparatus | Hiroki Ooi, Takashi Iwabuchi, Takafumi Terahara, Junichi Kumasako, George Ishikawa | 2011-05-03 |