Issued Patents All Time
Showing 26–50 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8032028 | Optical add/drop device | Yutaka Takita, Yasuhiko Aoki, Kyosuke Sone | 2011-10-04 |
| 8019219 | Optical packet switching apparatus and method therefor | Koji Matsunaga | 2011-09-13 |
| 7898341 | Non-inverting amplifier circuit and optical switch driver circuit | Tomohiro Ueno, Masaji Noguchi, Setsuo Yoshida | 2011-03-01 |
| 7848600 | Driving circuit of optical gate switch | Masaji Noguchi, Tomohiro Ueno, Setsuo Yoshida | 2010-12-07 |
| 7826744 | Optical network system and transmission apparatus | Hideyuki Miyata, Goji Nakagawa | 2010-11-02 |
| 7817923 | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them | Yuichi Akiyama, Takeshi Hoshida, Hiroki Ooi, Kentaro Nakamura, Naoki Kuwata +3 more | 2010-10-19 |
| 7791793 | Semiconductor optical amplifier gate switch drive circuit, semiconductor optical amplifier gate switching device, and optical cross connect | Masaji Noguchi, Tomohiro Ueno, Setsuo Yoshida | 2010-09-07 |
| 7643751 | Network managing apparatus, optical add/drop multiplexer, and network managing method | Kyosuke Sone | 2010-01-05 |
| 7546043 | Optical communication system | Hideyuki Miyata | 2009-06-09 |
| 7462812 | Optical switch apparatus and optical switching system | Yasuhiko Aoki, Eric Gouardes, Yoshiaki Nakano | 2008-12-09 |
| 7433601 | Optical network and optical add/drop apparatus | — | 2008-10-07 |
| 7408700 | Optical switch, and method for controlling drive voltage thereof | Setsuo Yoshida | 2008-08-05 |
| 7406262 | Optical transmission device | Goji Nakagawa, Hideyuki Miyata, Hiroshi Onaka, Setsuo Yoshida, Kyosuke Sone +1 more | 2008-07-29 |
| 7405858 | Acousto-optic tunable filter control apparatus automatically adjusting frequency and power of radio frequency signal | Masaji Noguchi, Tomohiro Ueno, Goji Nakagawa | 2008-07-29 |
| 7368700 | Optical switch apparatus and optical switching system | Yasuhiko Aoki, Eric Gouardes, Yoshiaki Nakano | 2008-05-06 |
| 7366426 | Optical add/drop multiplexer using tunable filter and method for feedback controlling the tunable filter | Hideyuki Miyata | 2008-04-29 |
| 7362925 | Control method and control apparatus of optical device | Hideyuki Miyata, Hiroshi Onaka, Tadao Nakazawa, Hiroshi Miyata, Yoichi Takasu +1 more | 2008-04-22 |
| 7308168 | Optical switch apparatus and control information updating method therein | Yutaka Takita | 2007-12-11 |
| 7292787 | Selected-wavelength tuning filter and optical add/drop multiplexer | Hiroshi Onaka, Yoshihiro Saito, Kazumasa Kubotera | 2007-11-06 |
| 7187814 | Optical add/drop device | Masaji Noguchi, Toshihisa Kyouno, Hideyuki Miyata | 2007-03-06 |
| 7181094 | Apparatus for controlling acousto-optic tunable filter and method of selecting wavelength | Masaji Noguchi, Tomohiro Ueno, Hiroyasu Ito, Hideyuki Miyata | 2007-02-20 |
| 7120321 | Control method and device for optical filter | Hideyuki Miyata, Isao Tsuyama | 2006-10-10 |
| 6996142 | Light source device and wavelength control device therefor | Hideyuki Miyata | 2006-02-07 |
| 6947630 | Control method and control apparatus for variable wavelength optical filter | Hideyuki Miyata, Isao Tsuyama | 2005-09-20 |
| 6934433 | Control method and control apparatus of optical device | Hideyuki Miyata, Hiroshi Onaka, Tadao Nakazawa, Hiroshi Miyata, Yoichi Takasu +1 more | 2005-08-23 |