Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11971579 | Multi-mode interferometric optical waveguide device and photonic integrated circuit | Kenichi Abe, Satoshi Nishikawa, Koichi Akiyama | 2024-04-30 |
| 10983272 | Multi-mode interference multiplexer/demultiplexer and optical element using the same | Satoshi Nishikawa, Koichi Akiyama | 2021-04-20 |
| 9762029 | Semiconductor laser and optical integrated light source including the same | Mitsunobu Gotoda | 2017-09-12 |
| 9601906 | Wavelength-tunable light source and wavelength-tunable light source module | Yuichiro Horiguchi, Mitsunobu Gotoda, Eitaro Ishimura | 2017-03-21 |
| 9184568 | Wavelength variable light source and wavelength variable light source module | Mitsunobu Gotoda, Eitaro Ishimura | 2015-11-10 |
| 9147997 | Optical semiconductor device | Takeshi Saito, Eitaro Ishimura, Tohru Takiguchi, Kazuhisa Takagi, Keisuke Matsumoto +1 more | 2015-09-29 |
| 9042008 | Optical semiconductor device | Takeshi Saito, Eitaro Ishimura, Tohru Takiguchi, Kazuhisa Takagi, Keisuke Matsumoto +1 more | 2015-05-26 |
| 8351029 | Optical fiber sensor | Satoshi Nishikawa, Eiji Yagyu, Kiichi Yoshiara, Tateki Mitani, Yutarou Hamatani | 2013-01-08 |
| 8285086 | Optical fiber sensor | Satoshi Nishikawa, Kiichi Yoshiara, Eiji Yagyu, Tateki Mitani, Yutaro Hamatani | 2012-10-09 |
| 7672544 | Optical fiber sensor | Kiichi Yoshiara, Yasuhisa Shimakura, Sadayuki Matsumoto, Tateki Mitani, Shigeki Kanamaru +1 more | 2010-03-02 |
| 7379640 | Tunable dispersion compensator and method of manufacturing the same | Sadayuki Matsumoto, Yasuhisa Shimakura, Kiichi Yoshiara | 2008-05-27 |
| 6882760 | Polarization dispersion compensating apparatus | Sadayuki Matsumoto, Takuya Ohira, Kiichi Yoshiara, Junichiro Hoshizaki, Hajime Takeya +1 more | 2005-04-19 |
| 6810179 | Variable dispersion compensator | Takuya Ohira, Sadayuki Matsumoto, Kiichi Yoshiara, Junichiro Hoshizaki, Shigeru Matsuno +2 more | 2004-10-26 |
| 6807322 | PMD compensating apparatus for controlling polarization controller based on detection of magnitude of waveform distortion | Sadayuki Matsumoto, Kiichi Yoshiara, Takuya Ohira, Junichiro Hoshizaki, Shigeru Matsuno +2 more | 2004-10-19 |
| 6690860 | Method of manufacturing grating | Sadayuki Matsumoto, Takuya Ohira, Kiichi Yoshiara, Shigeru Matsuno, Hajime Takeya +1 more | 2004-02-10 |
| 6643430 | Temperature control system for a grating | Sadayuki Matsumoto, Takuya Ohira, Kiichi Yoshiara, Shigeru Matsuno, Hajime Takeya +1 more | 2003-11-04 |
| 6522809 | Waveguide grating device and method of controlling Bragg wavelength of waveguide grating | Kiichi Yoshiara, Sadayuki Matsumoto, Junichiro Hoshizaki, Takeyuki Maegawa, Hajime Takeya +3 more | 2003-02-18 |