Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7864892 | Control method and apparatus for receiving optical signal | Tadashi Ikeuchi, Naoki Kuwata | 2011-01-04 |
| 7830789 | Method for accommodating signal paths to ring network | Tomohiro Hashiguchi, Kazuyuki Tajima | 2010-11-09 |
| 7826741 | Optical network system | — | 2010-11-02 |
| 7813640 | Optical connection switching apparatus and management control unit thereof | Kouichirou Amemiya, Takao Naito, Toshiki Tanaka | 2010-10-12 |
| 7761006 | Method for designing optical network, and computer readable medium | Kazuyuki Tajima, Tomohiro Hashiguchi | 2010-07-20 |
| 7751345 | Optical network design method and storage medium for storing design program | Tomohiro Hashiguchi, Kazuyuki Tajima | 2010-07-06 |
| 7689133 | Optical signal reception device and method of controlling optical signal reception | Takeshi Hoshida, Tomoo Takahara, Kentaro Nakamura, Naoki Kuwata | 2010-03-30 |
| 7664397 | Optical network system | Masahiro Yuki, Takao Naito | 2010-02-16 |
| 7660527 | Optical network design method | Tomohiro Hashiguchi, Kazuyuki Tajima | 2010-02-09 |
| 7555061 | Optical communication device | Takeshi Hoshida, Tomoo Takahara, Kentaro Nakamura, Naoki Kuwata | 2009-06-30 |
| 7471902 | Wavelength allocation method of signal light, and optical transmission apparatus and wavelength division multiplexing optical transmission system using the method | Akira Miura, Takao Naito | 2008-12-30 |
| 7433600 | Optical node device and system including the device | Hiroaki Tomofuji, Hiroshi Onaka | 2008-10-07 |
| 7400830 | Quality monitoring method and apparatus for wavelength division multiplexed optical signal and optical transmission system using the same | Kenichi Torii, Takao Naito, Hiroshi Nakamoto | 2008-07-15 |
| 7200333 | Optical communication apparatus, system, and method that properly compensate for chromatic dispersion | Hiroaki Tomofuji, Hiroshi Onaka | 2007-04-03 |
| 7146066 | Wavelength division multiplexing optical transmission system | Takao Naito | 2006-12-05 |
| 7062173 | Optical device and wavelength division multiplexing communication system using same | Hiroaki Tomofuji | 2006-06-13 |
| 6741811 | Optical cross-connect device and system having the device | Tetsuya Nishi, Satoshi Kuroyanagi, Ichiro Nakajima, Takuji Maeda | 2004-05-25 |
| 6643422 | Optical switch changeover controlling method, optical node device and optical switch system | Satoshi Kuroyanagi, Tetsuya Nishi, Ichiro Nakajima, Takuji Maeda | 2003-11-04 |