Issued Patents All Time
Showing 76–100 of 102 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8391725 | Optical receiver for controlling wavelength of local oscillation light and local oscillation light control method | Shoichiro Oda, Takeshi Hoshida, Takahito Tanimura | 2013-03-05 |
| 8351795 | Optical transmission system and optical transmission method | Takeshi Hoshida, Takahito Tanimura, Toru Katagiri, Shoichiro Oda | 2013-01-08 |
| 8351797 | Repeater and repeating method | Takeshi Hoshida | 2013-01-08 |
| 8331793 | Optical transmission apparatus and method | Osamu Takeuchi, Masahiro Shioda, Yasuhiko Aoki | 2012-12-11 |
| 8331805 | Digital coherent optical receiver | Takeshi Hoshida | 2012-12-11 |
| 8301039 | Delay processing apparatus, signal amplification apparatus, opto-electric conversion apparatus, analog-digital conversion apparatus, receiving apparatus, and receiving method | Masato Nishihara, Tomoo Takahara | 2012-10-30 |
| 8249464 | Optical receiver and method for optical reception | Shoichiro Oda, Takeshi Hoshida, Takahito Tanimura, Yuichi Akiyama | 2012-08-21 |
| 8189718 | Adaptive optimization method and apparatus for average length | Lei Li, Zhenning Tao | 2012-05-29 |
| 8145069 | Optical transmitter | Toshiki Tanaka, Takeshi Hoshida, Yuichi Akiyama | 2012-03-27 |
| 8116635 | Polarization multiplexing and transmitting apparatus | Takahito Tanimura, Takeshi Hoshida, Shoichiro Oda | 2012-02-14 |
| 8103177 | Apparatus and method for frequency offset monitoring used in digital coherent optical receiver | Huijian Zhang, Lei Li, Zhenning Tao | 2012-01-24 |
| 8103176 | Frequency offset compensating apparatus and method, and optical coherent receiver | Lei Li, Zhenning Tao | 2012-01-24 |
| 8086113 | Optical receiver | Takeshi Hoshida, Takahito Tanimura | 2011-12-27 |
| 8078066 | Optical coherent receiver, frequency offset estimating apparatus and method for optical coherent receiver | Lei Li, Zhenning Tao | 2011-12-13 |
| 7720392 | Differential quadrature phase-shift modulator and method for setting driving voltage thereof | Takeshi Hoshida | 2010-05-18 |
| 7680419 | Repeater and repeating method | Takeshi Hoshida | 2010-03-16 |
| 7630650 | Multi-level modulation receiving device | Takeshi Hoshida | 2009-12-08 |
| 7602322 | Analog-to-digital conversion controller, optical receiving device, optical receiving method, and waveform-distortion compensating device | Takahito Tanimura, Takeshi Hoshida | 2009-10-13 |
| 7596315 | Wavelength division multiplexing optical transmission system and transmission wavelength control method therefor | Takeshi Hoshida | 2009-09-29 |
| 7505414 | Network designing device and computer-readable medium | Takeshi Hoshida, Yuichi Akiyama, Takafumi Terahara | 2009-03-17 |
| 7382979 | Wavelength dispersion compensation design method and a system thereof | Yuichi Akiyama, Takafumi Terahara, Takeshi Hoshida | 2008-06-03 |
| 7061669 | Optical apparatus with loss compensation capability and optical amplifier for loss compensation | Miki Onaka, Masato Nishihara, Etsuko Hayashi, Hideyuki Miyata | 2006-06-13 |
| 4905060 | Light emitting device with disordered region | Naoki Chinone, Makoto Okai, Shinji Tsuji | 1990-02-27 |
| 4772925 | High speed switching field effect transistor | Tadashi Fukuzawa, Ken Yamaguchi, Susumu Takahashi, Michiharu Nakamura | 1988-09-20 |
| 4509173 | Phase-locked semiconductor laser device | Jun-ichi Umeda, Takashi Kajimura, Takao Kuroda | 1985-04-02 |