Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10938183 | Wavelength-variable laser | Junji Yoshida, Hirokazu Itoh, Satoshi Irino, Yuichiro Irie, Taketsugu SAWAMURA +1 more | 2021-03-02 |
| 10511150 | Wavelength-variable laser | Junji Yoshida, Hirokazu Itoh, Satoshi Irino, Yuichiro Irie, Taketsugu SAWAMURA +1 more | 2019-12-17 |
| 9236706 | Surface-emitting laser apparatus, optical module, and method of driving surface-emitting laser element | Tomofumi Kise, Suguru Imai, Hitoshi Shimizu | 2016-01-12 |
| 9054486 | Optical amplifier device | Hideaki Hasegawa, Kazuaki Kiyota, Takeshi Akutsu, Noriyuki Yokouchi, Kazutaka Nara | 2015-06-09 |
| 8837869 | SOA-PLC hybrid integrated polarization diversity circuit and method for manufacturing the same | Takeshi Akutsu, Kazutaka Nara, Noriyuki Yokouchi, Hideaki Hasegawa | 2014-09-16 |
| 8811447 | Semiconductor laser with varied-width waveguide and semiconductor laser module including the same | Yutaka Ohki, Satoshi Arakawa, Shunsuke OKUYAMA | 2014-08-19 |
| 8547631 | Semiconductor optical amplifier | Hideaki Hasegawa, Noriyuki Yokouchi, Junji Yoshida | 2013-10-01 |
| 8532155 | Optical interconnection system | Keishi Takaki, Yasumasa Kawakita, Naoki Tsukiji | 2013-09-10 |
| 8380032 | Semiconductor optical amplifier module | Hideaki Hasegawa | 2013-02-19 |
| 8149891 | Semiconductor device and optical module | — | 2012-04-03 |
| 7796846 | Optical integrated device and method of manufacturing the same | Kazuaki Kiyota | 2010-09-14 |
| 7561765 | Optical integrated circuit and optical integrated circuit module | Junichi Hasegawa, Takeshi Akutsu, Kazutaka Nara, Noriyuki Yokouchi | 2009-07-14 |
| 7453100 | DFB laser assembly and laser module | Ryosuke Yatsu, Akihiko Kasukawa | 2008-11-18 |
| 7180930 | DFB semiconductor laser device having ununiform arrangement of a diffraction grating | Keishi Takaki, Tomofumi Kise | 2007-02-20 |
| 7003013 | Distributed feedback semiconductor laser device | Tomofumi Kise | 2006-02-21 |
| 6947463 | Semiconductor laser device for use in a laser module | Naoki Tsukiji, Junji Yoshida | 2005-09-20 |
| 6829277 | Distributed feedback semiconductor laser device and laser module | Ryosuke Yatsu, Akihiko Kasukawa | 2004-12-07 |
| 6782022 | Semiconductor laser device having improved output power characteristics | Ryosuke Yatsu, Akihiko Kasukawa | 2004-08-24 |
| 6782028 | Semiconductor laser device for use in a semiconductor laser module and an optical amplifier | Naoki Tsukiji, Junji Yoshida, Toshio Kimura, Takeshi Aikiyo, Takeo Shimizu +5 more | 2004-08-24 |
| 6765935 | Semiconductor laser module, manufacturing method thereof and optical amplifier | Toshio Kimura, Masashi Nakae, Takeo Shimizu, Naoki Tsukiji, Junji Yoshida +5 more | 2004-07-20 |
| 6743648 | Method for fabricating a set of distributed feedback semiconductor lasers | Tomofumi Kise | 2004-06-01 |
| 6728288 | DFB semiconductor laser device | Satoshi Arakawa | 2004-04-27 |
| 6704342 | Gain-coupled distributed-feedback semiconductor laser device | Akihiko Kasukawa | 2004-03-09 |
| 6680960 | Semiconductor laser device having a diffraction grating on a light emission side | Junji Yoshida, Naoki Tsukiji | 2004-01-20 |
| 6674783 | Distributed feedback type semiconductor laser device and method of manufacturing the same | Akihiko Kasukawa | 2004-01-06 |