Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7941011 | Multilevel light intensity modulator | — | 2011-05-10 |
| 7893381 | Welding set of metal member including permanent magnet and welding method thereof, as well as electric rotating machine | Masahiko Fujita, Shoichiro Nishitani, Yasushi Nakatake, Shinya Kudou, Kazuhiro Shono +2 more | 2011-02-22 |
| 7787717 | Optical waveguide device | Yasuhiro Ohmori, Shinji Maruyama, Tetsuo Ishizaka | 2010-08-31 |
| 7729580 | Waveguide type optical device and manufacturing method of the waveguide type optical device | Kazuhiro Tanaka | 2010-06-01 |
| 7689078 | Optical device | Akira Ishii, Takehito Tanaka, Tetsu Hasegawa | 2010-03-30 |
| 7643712 | Optical module and optical switching device | Tetsu Hasegawa | 2010-01-05 |
| 7627200 | Optical device | Takashi Shiraishi, Tetsu Hasegawa, Kazuhiro Tanaka | 2009-12-01 |
| 7551820 | Optical device | Akira Ishii, Takehito Tanaka, Tetsu Hasegawa | 2009-06-23 |
| 7526161 | Optical device | Akira Ishii, Takehito Tanaka, Tetsu Hasegawa | 2009-04-28 |
| 7519241 | Optical device | — | 2009-04-14 |
| 7386198 | Optical waveguide device | Yasuhiro Ohmori, Shinji Maruyama, Tetsuo Ishizaka | 2008-06-10 |
| 7340114 | Optical waveguide device and optical modulator | Masaki Sugiyama, Tadao Nakazawa | 2008-03-04 |
| 7315676 | Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus | Shuuichi Miyawaki, Tetsuo Ishizaka | 2008-01-01 |
| 7289703 | Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus | Shuuichi Miyawaki, Tetsuo Ishizaka | 2007-10-30 |
| 7280713 | Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus | Shuuichi Miyawaki, Tetsuo Ishizaka | 2007-10-09 |
| 7263244 | Optical modulator | Takehito Tanaka | 2007-08-28 |
| 7239764 | Optical waveguide device with reduced driving voltage | Tadao Nakazawa, Masaki Sugiyama, Masaaki Ohyama | 2007-07-03 |
| 7155072 | Optical modulator | Tadao Nakazawa, Masaki Sugiyama | 2006-12-26 |
| 7133578 | Optical modulator with an impedance matching region | — | 2006-11-07 |
| 7113677 | Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus | Shuuichi Miyawaki, Tetsuo Ishizaka | 2006-09-26 |
| 7095559 | Variable optical delay circuit | Shinji Taniguchi, Tadao Nakazawa, Yumi Nakazawa | 2006-08-22 |
| 7079732 | Optical device | Shinji Maruyama, Tomoyuki Itou, Yoshihiro Takahashi, Yasuhiro Omori, Yoshihiko Yoshida | 2006-07-18 |
| 7058241 | Optical modulator | Masaki Sugiyama | 2006-06-06 |
| 7006715 | Optical modulator of clock modulation type | Tetsuo Ishizaka, Takehito Tanaka | 2006-02-28 |
| 6999223 | Optical modulator | Minoru Seino, Tetsuo Ishizaka, Takehito Tanaka, Tadao Nakazawa | 2006-02-14 |