Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8274733 | Semiconductor optical amplification module, optical matrix switching device, and drive circuit | — | 2012-09-25 |
| 8179593 | Optical-switch drive circuit and method thereof | Yutaka Kai, Setsuo Yoshida | 2012-05-15 |
| 8139903 | Driving circuit of optical gate switch | Tomohiro Ueno, Yutaka Kai, Setsuo Yoshida | 2012-03-20 |
| 8107813 | Drive circuit and optical switch | Setsuo Yoshida, Yutaka Kai | 2012-01-31 |
| 7898341 | Non-inverting amplifier circuit and optical switch driver circuit | Tomohiro Ueno, Yutaka Kai, Setsuo Yoshida | 2011-03-01 |
| 7848600 | Driving circuit of optical gate switch | Tomohiro Ueno, Yutaka Kai, Setsuo Yoshida | 2010-12-07 |
| 7791793 | Semiconductor optical amplifier gate switch drive circuit, semiconductor optical amplifier gate switching device, and optical cross connect | Tomohiro Ueno, Yutaka Kai, Setsuo Yoshida | 2010-09-07 |
| 7561810 | Optical communication apparatus | Tomohiro Ueno | 2009-07-14 |
| 7405858 | Acousto-optic tunable filter control apparatus automatically adjusting frequency and power of radio frequency signal | Tomohiro Ueno, Goji Nakagawa, Yutaka Kai | 2008-07-29 |
| 7349632 | Method of wavelength selection control and wavelength variable filter device | Toshihisa Kyouno, Tomohiro Ueno, Hideyuki Miyata, Yasuhiko Aoki | 2008-03-25 |
| 7187814 | Optical add/drop device | Toshihisa Kyouno, Hideyuki Miyata, Yutaka Kai | 2007-03-06 |
| 7181094 | Apparatus for controlling acousto-optic tunable filter and method of selecting wavelength | Tomohiro Ueno, Hiroyasu Ito, Hideyuki Miyata, Yutaka Kai | 2007-02-20 |