Issued Patents All Time
Showing 1–25 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8521039 | Optical communication apparatus and optical add/drop apparatus | Hideyuki Miyata | 2013-08-27 |
| 8213798 | Optical transmission apparatus, wavelength division multiplexing optical communication system and optical transmission method | Hiroki Ooi, George Ishikawa | 2012-07-03 |
| 7953329 | Optical communication apparatus and optical add/drop apparatus | Hideyuki Miyata | 2011-05-31 |
| 7869715 | Dispersion compensating apparatus and dispersion compensation control method | Hiroki Ooi, Takeshi Hoshida | 2011-01-11 |
| 7860408 | Interferometer for demodulating differential M-phase shift keying signal | Akihiko Isomura, Jens Rasmussen, Takafumi Terahara, Kentaro Nakamura, Takeshi Hoshida +7 more | 2010-12-28 |
| 7848659 | Optical transmitting apparatus and optical communication system | Akira Miura, Kentaro Nakamura, Yuichi Akiyama, Hiroki Ooi, Jens Rasmussen +1 more | 2010-12-07 |
| 7822204 | Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, transmission/reception system, and communication system | Setsuo Yoshida, Osamu Hirota | 2010-10-26 |
| 7769299 | Chromatic dispersion monitoring method and chromatic dispersion monitoring apparatus, and optical transmission system | Hiroki Ooi, Akira Miura | 2010-08-03 |
| 7688498 | Optical amplifier and optical monitor circuit | Miki Onaka, Etsuko Hayashi | 2010-03-30 |
| 7631378 | Optical waveform shaper | Kazuo Hironishi, Takeshi Hoshida | 2009-12-15 |
| 7606504 | Optical receiver and optical receiving method corresponding to differential M-phase shift keying system | Takeshi Hoshida | 2009-10-20 |
| 7577368 | Optical communication apparatus and optical add/drop apparatus | Hideyuki Miyata | 2009-08-18 |
| 7483639 | Method and system for transmitting information in an optical communication system using distributed amplification | Takeshi Hoshida, Takafumi Terahara | 2009-01-27 |
| 7471790 | Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, and communication system | Setsuo Yoshida, Osamu Hirota | 2008-12-30 |
| 7433600 | Optical node device and system including the device | Toru Katagiri, Hiroaki Tomofuji | 2008-10-07 |
| 7406262 | Optical transmission device | Goji Nakagawa, Hideyuki Miyata, Yutaka Kai, Setsuo Yoshida, Kyosuke Sone +1 more | 2008-07-29 |
| 7389054 | Optical communication apparatus and optical add/drop apparatus | Hideyuki Miyata | 2008-06-17 |
| 7362925 | Control method and control apparatus of optical device | Hideyuki Miyata, Tadao Nakazawa, Yutaka Kai, Hiroshi Miyata, Yoichi Takasu +1 more | 2008-04-22 |
| 7292787 | Selected-wavelength tuning filter and optical add/drop multiplexer | Yutaka Kai, Yoshihiro Saito, Kazumasa Kubotera | 2007-11-06 |
| 7200338 | Method and system for communicating a clock signal over an optical link | — | 2007-04-03 |
| 7200333 | Optical communication apparatus, system, and method that properly compensate for chromatic dispersion | Toru Katagiri, Hiroaki Tomofuji | 2007-04-03 |
| 7142785 | Light branching/inserting apparatus and light branching apparatus using wavelength selection filter | Kazue Otsuka, Terumi Chikama | 2006-11-28 |
| 7127139 | Optical multiplexing method and optical multiplexer, and optical amplifier using same | Miki Onaka, Etsuko Hayashi | 2006-10-24 |
| 7116907 | Acousto-optical tunable filters cascaded together | Tadao Nakazawa, Minoru Seino | 2006-10-03 |
| 7088922 | Wavelength division multiplexing optical communication system | Hiroaki Tomofuji, Terumi Chikama | 2006-08-08 |