Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11936156 | Optical power transmission apparatus | Kengo Watanabe | 2024-03-19 |
| 9912122 | Semiconductor optical device | Yasumasa Kawakita | 2018-03-06 |
| 9711945 | Method of designing semiconductor laser device, method of designing raman amplifier, methods of manufacturing semiconductor laser device, semiconductor laser device, raman amplifier, and optical communication system | Hideaki Hasegawa, Taketsugu SAWAMURA, Satoshi Irino, Junji Yoshida | 2017-07-18 |
| 9054486 | Optical amplifier device | Hideaki Hasegawa, Masaki Funabashi, Kazuaki Kiyota, Takeshi Akutsu, Kazutaka Nara | 2015-06-09 |
| 8837869 | SOA-PLC hybrid integrated polarization diversity circuit and method for manufacturing the same | Takeshi Akutsu, Kazutaka Nara, Masaki Funabashi, Hideaki Hasegawa | 2014-09-16 |
| 8547631 | Semiconductor optical amplifier | Hideaki Hasegawa, Masaki Funabashi, Junji Yoshida | 2013-10-01 |
| 7885312 | Surface emitting semiconductor laser element | Tomofumi Kise | 2011-02-08 |
| 7881359 | Surface-emission semiconductor laser device | Norihiro Iwai | 2011-02-01 |
| 7618201 | Optical module | Sayoko Ibe, Kengo Muranushi, Tatsuya Kimoto, Tatsuro Kurobe | 2009-11-17 |
| 7564563 | Laser gyro and electronic device using the same | Junji Yoshida, Takahisa Harayama, Takehiro Fukushima, Akihiko Kasukawa, Shuichi Tamura +2 more | 2009-07-21 |
| 7561765 | Optical integrated circuit and optical integrated circuit module | Masaki Funabashi, Junichi Hasegawa, Takeshi Akutsu, Kazutaka Nara | 2009-07-14 |
| 7525726 | Photonic crystal semiconductor device and production method thereof | Tomofumi Kise, Tatsuya Kimoto, Toshihiko Baba | 2009-04-28 |
| 7368316 | Surface-emission semiconductor laser device | Norihiro Iwai | 2008-05-06 |
| 7215693 | Surface emitting semiconductor laser device | Norihiro Iwai, Tatsuyuki Shinagawa | 2007-05-08 |
| 7085301 | Photonic crystal single transverse mode defect structure for vertical cavity surface emitting laser | Kent D. Choquette | 2006-08-01 |
| 6914925 | Vertical cavity surface emitting semiconductor laser device | Tatsuyuki Shinagawa, Norihiro Iwai | 2005-07-05 |
| 6900475 | Surface-emission semiconductor laser device | Norihiro Iwai | 2005-05-31 |
| 6839369 | Surface emitting semiconductor laser device | Norihiro Iwai, Tatsuyuki Shinagawa | 2005-01-04 |
| 6829274 | Surface emitting semiconductor laser device | Natsumi Ueda, Tatsuyuki Shinagawa | 2004-12-07 |
| 6737290 | Surface-emitting semiconductor laser device and method for fabricating the same, and surface-emitting semiconductor laser array employing the laser device | Toshikazu Mukaihara, Akihiko Kasukawa | 2004-05-18 |
| 6700914 | Vertical cavity surface emitting laser device | Masato Tachibana, Natsumi Ueda, Tatsuyuki Shinagawa | 2004-03-02 |
| 6636543 | Semiconductor device and surface emitting semiconductor laser device | Norihiro Iwai, Tatsuyuki Shinagawa | 2003-10-21 |
| 6430203 | Semiconductor laser device with non-oxidized facet regions | Norihiro Iwai | 2002-08-06 |
| 6115116 | Waveguide-type variable-sensitivity semiconductor photodetector | Junji Yoshida, Takeharu Yamaguchi, Kazuaki Nishikata | 2000-09-05 |
| 5973339 | Semiconductor photodetector having an optical attenuator | Takeharu Yamaguchi, Junji Yoshida | 1999-10-26 |