Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8670665 | Optical apparatus using polarized orthogonal control | Takashi Toyomaki, Noriaki Mizuguchi | 2014-03-11 |
| 8180226 | Optical receiver | Masahito Mure, Masahide Miyachi, Kaoru Higuma, Norikazu Miyazaki, Toshio Kataoka +3 more | 2012-05-15 |
| 8054524 | Optical amplifier | Hiroshi Nagaeda, Noriyasu Shiga, Yoshiaki Horiuchi | 2011-11-08 |
| 7831118 | Coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission method | Takashi Toyomaki, Tomoyuki Ohtsuka | 2010-11-09 |
| 7522843 | Optical repeater converting wavelength and bit rate between networks | — | 2009-04-21 |
| 7486857 | Temperature-independent optical wavelength identification apparatus and optical wavelength identification method | — | 2009-02-03 |
| 7476038 | Optical device module | Tadao Nakazawa, Hirofumi Aota, Kazuaki Akimoto, Hideyuki Miyata | 2009-01-13 |
| 7443503 | Polarization measuring apparatus | Teruhiro Kubo | 2008-10-28 |
| 7440648 | Wavelength selective switch | Kazuaki Akimoto | 2008-10-21 |
| 7424227 | Optical repeater converting wavelength and bit rate between networks | — | 2008-09-09 |
| 7379636 | Optical switch | Satoshi Kuroyanagi | 2008-05-27 |
| 7269314 | Dispersion compensation device | — | 2007-09-11 |
| 7206476 | Optical switch | Satoshi Kuroyanagi | 2007-04-17 |
| 7151866 | Optical device module | Tadao Nakazawa, Hirofumi Aota, Kazuaki Akimoto, Hideyuki Miyata | 2006-12-19 |
| 7106927 | Optical cross-connect apparatus | — | 2006-09-12 |
| 6999648 | Optical cross-connect apparatus | Makoto Murakami, Takehisa Ishikawa | 2006-02-14 |
| 6907154 | Optical switch having switch cells with movable switch mirrors | Satoshi Kuroyanagi | 2005-06-14 |
| 6901179 | Optical switch and using method therefor | — | 2005-05-31 |
| 6819828 | Method and device for optical fiber transmission | Tsukasa Takahashi, Toshihiro Ohtani | 2004-11-16 |
| 6813410 | Optical switch for compensating for degradation of optical-coupling characteristic | — | 2004-11-02 |
| 6810215 | Optical repeater converting wavelength and bit rate between networks | — | 2004-10-26 |
| 6748130 | Optical switch and using method therefor | — | 2004-06-08 |
| 6252698 | Method and device for wavelength conversion, and system including the device | — | 2001-06-26 |
| 6074102 | Optical device capable of operating at high speeds | — | 2000-06-13 |
| 5999289 | Detection of, and compensation for, waveform change due to chromatic dispersion | Takeshi Ihara | 1999-12-07 |