Issued Patents All Time
Showing 1–25 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9419720 | Optical signal transmitter | Yuichi Akiyama, Takeshi Hoshida | 2016-08-16 |
| 8582981 | Optical transmitter and control method therefor | Yuichi Akiyama, Toshiki Tanaka, Masato Nishihara | 2013-11-12 |
| 8521039 | Optical communication apparatus and optical add/drop apparatus | Hiroshi Onaka | 2013-08-27 |
| 8412047 | Polarization multiplexed light transmitter and control method thereof | Toshiki Tanaka, Yuichi Akiyama, Masahiro Yuki | 2013-04-02 |
| 8400702 | Optical modulation device and optical modulation method | Toshiki Tanaka, Yuichi Akiyama, Takeshi Hoshida | 2013-03-19 |
| 8170415 | Physical wiring control device, physical wiring control method, and computer product | Toshiki Tanaka, Kouichirou Amemiya | 2012-05-01 |
| 8121492 | Optical transmitting apparatus | Yuichi Akiyama, Noriaki Mizuguchi | 2012-02-21 |
| 7953329 | Optical communication apparatus and optical add/drop apparatus | Hiroshi Onaka | 2011-05-31 |
| 7853147 | Information processing system, calculation node, and control method of information processing system | Toshiki Tanaka, Yasuhiko Aoki, Takao Naito, Kouichiro Amemiya | 2010-12-14 |
| 7840141 | Differential M phase-shift modulator | Toshiki Tanaka | 2010-11-23 |
| 7826744 | Optical network system and transmission apparatus | Goji Nakagawa, Yutaka Kai | 2010-11-02 |
| 7773283 | Optical modulation device and optical modulation method | Toshiki Tanaka, Yuichi Akiyama, Takeshi Hoshida | 2010-08-10 |
| 7734175 | Network configuring apparatus | Kouichirou Amemiya, Toshiyuki Shibuya, Tsunehisa Doi, Toshiki Tanaka, Yasutaka Taniuchi | 2010-06-08 |
| 7577368 | Optical communication apparatus and optical add/drop apparatus | Hiroshi Onaka | 2009-08-18 |
| 7546043 | Optical communication system | Yutaka Kai | 2009-06-09 |
| 7476038 | Optical device module | Tadao Nakazawa, Hirofumi Aota, Kazuaki Akimoto, Yoichi Oikawa | 2009-01-13 |
| 7447446 | Light source apparatus, and method for switching redundancy of the light source | Yasuhiko Aoki, Setsuo Yoshida | 2008-11-04 |
| 7443504 | Arbitrary and endless polarization controller and polarization-mode dispersion compensator using the same and arbitrary and endless polarization controlling method | Kyosuke Sone, Setsuo Yoshida | 2008-10-28 |
| 7406262 | Optical transmission device | Goji Nakagawa, Yutaka Kai, Hiroshi Onaka, Setsuo Yoshida, Kyosuke Sone +1 more | 2008-07-29 |
| 7389054 | Optical communication apparatus and optical add/drop apparatus | Hiroshi Onaka | 2008-06-17 |
| 7366426 | Optical add/drop multiplexer using tunable filter and method for feedback controlling the tunable filter | Yutaka Kai | 2008-04-29 |
| 7362925 | Control method and control apparatus of optical device | Hiroshi Onaka, Tadao Nakazawa, Yutaka Kai, Hiroshi Miyata, Yoichi Takasu +1 more | 2008-04-22 |
| 7349632 | Method of wavelength selection control and wavelength variable filter device | Masaji Noguchi, Toshihisa Kyouno, Tomohiro Ueno, Yasuhiko Aoki | 2008-03-25 |
| 7187814 | Optical add/drop device | Masaji Noguchi, Toshihisa Kyouno, Yutaka Kai | 2007-03-06 |
| 7181094 | Apparatus for controlling acousto-optic tunable filter and method of selecting wavelength | Masaji Noguchi, Tomohiro Ueno, Hiroyasu Ito, Yutaka Kai | 2007-02-20 |