Issued Patents All Time
Showing 1–25 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11342724 | Semiconductor optical integrated device | Keisuke Matsumoto, Satoshi Kajiya, Satoshi Nishikawa | 2022-05-24 |
| 11329179 | Semiconductor light-receiving device and method for manufacturing the same | Ryota Takemura, Harunaka YAMAGUCHI | 2022-05-10 |
| 11215774 | Semiconductor optical integrated device | Naoki Nakamura | 2022-01-04 |
| 9804330 | Semiconductor device | Ryosuke Nagao, Yoshifumi Sasahata | 2017-10-31 |
| 9640703 | Avalanche photodiode | Eiji Yagyu, Masaharu Nakaji | 2017-05-02 |
| 9601906 | Wavelength-tunable light source and wavelength-tunable light source module | Masakazu Takabayashi, Yuichiro Horiguchi, Mitsunobu Gotoda | 2017-03-21 |
| 9263853 | Optical semiconductor device, method for manufacturing optical semiconductor device, and method for manufacturing optical module | Yusuke Azuma, Kimitaka Shibata | 2016-02-16 |
| 9184568 | Wavelength variable light source and wavelength variable light source module | Mitsunobu Gotoda, Masakazu Takabayashi | 2015-11-10 |
| 9147997 | Optical semiconductor device | Takeshi Saito, Masakazu Takabayashi, Tohru Takiguchi, Kazuhisa Takagi, Keisuke Matsumoto +1 more | 2015-09-29 |
| 9042008 | Optical semiconductor device | Takeshi Saito, Masakazu Takabayashi, Tohru Takiguchi, Kazuhisa Takagi, Keisuke Matsumoto +1 more | 2015-05-26 |
| 8698268 | Avalanche photodiode and method for manufacturing the avalanche photodiode | Eiji Yagyu, Masaharu Nakaji | 2014-04-15 |
| 8659053 | Semiconductor light detecting element | Yoshifumi Sasahata | 2014-02-25 |
| 8655116 | Optical modulator | Kazuhisa Takagi, Keisuke Matsumoto, Takeshi Saito | 2014-02-18 |
| 8526478 | Semiconductor optical integrated element | Kazuhisa Takagi, Keisuke Matsumoto, Takeshi Saito | 2013-09-03 |
| 8035181 | Semiconductor photodetector with improved quantum efficiency as a function of detected light wavelength | Masaharu Nakaji | 2011-10-11 |
| 7928472 | Optical semiconductor device with a distributed Bragg reflector layer | Masaharu Nakaji, Eiji Yagyu | 2011-04-19 |
| 7910953 | Optical semiconductor device | Masaharu Nakaji, Eiji Yagyu | 2011-03-22 |
| 7893460 | Semiconductor light detecting element including first and second multilayer light reflective structures sandwiching and contacting a light absorptive layer | Masaharu Nakaji | 2011-02-22 |
| 7875943 | Semiconductor photoreceptor device | Masaharu Nakaji | 2011-01-25 |
| 7855400 | Semiconductor light detecting element and method for manufacturing the semiconductor light detecting element | Masaharu Nakaji | 2010-12-21 |
| 7851823 | Semiconductor photodetector device | — | 2010-12-14 |
| 7808065 | Semiconductor light receiving element | Masaharu Nakaji | 2010-10-05 |
| 7791104 | Optical semiconductor device | Yoshikazu Tanaka | 2010-09-07 |
| 7723666 | Photodiode array configured to increase electrical output power and optical microwave transmission system receiver utilizing the same | Tsutomu Nagatsuka, Yoshihito Hirano, Tomohiro Akiyama, Ryuji Ishii, Masahito Sato +1 more | 2010-05-25 |
| 7719028 | Semiconductor light-receiving device and manufacturing method thereof | Eiji Yagyu, Masaharu Nakaji | 2010-05-18 |