Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12326643 | Light modulator | Hajime Tanaka, Naoki Fujiwara | 2025-06-10 |
| 12321076 | Method for manufacturing optical modulator, testing method, non-transitory storage medium, and light transmission apparatus | Tsutomu Ishikawa | 2025-06-03 |
| 12224557 | Semiconductor optical device and method of manufacturing the same | Naoki Fujiwara, Akira Furuya | 2025-02-11 |
| 11966104 | Optical modulator | Makoto Ogasawara, Mitsuru Ekawa | 2024-04-23 |
| 11868021 | Method for manufacturing optical modulator, testing method, non-transitory storage medium, and light transmission apparatus | Tsutomu Ishikawa | 2024-01-09 |
| 11251143 | Semiconductor device and method of manufacturing the same | Masataka Watanabe, Takehiko Kikuchi | 2022-02-15 |
| 11215898 | Optical modulator | — | 2022-01-04 |
| 10824044 | Mach-Zehnder modulator | Masataka Watanabe | 2020-11-03 |
| 10725241 | Asymmetrical spot-size converter and method of manufacturing spot-size converter | Takuo HIRATANI, Masataka Watanabe | 2020-07-28 |
| 10564509 | Mach-Zehnder modulator, light modulating apparatus | — | 2020-02-18 |
| 10551644 | Mach-Zehnder modulator | — | 2020-02-04 |
| 10317770 | Mach-zehnder modulator | Jun Otsuka | 2019-06-11 |
| 9971225 | Spot size converter, semiconductor optical device | — | 2018-05-15 |
| 9885936 | Mach-Zehnder modulator, method for fabricating Mach-Zehnder modulator | Masataka Watanabe | 2018-02-06 |
| 9638980 | Modulator and production method thereof | Hideki Yagi, Hirohiko Kobayashi, Takamitsu Kitamura | 2017-05-02 |
| 9563100 | Optical semiconductor device and method of producing the same | Ryuji Masuyama, Daisuke Kimura, Hirohiko Kobayashi, Takamitsu Kitamura, Hideki Yagi | 2017-02-07 |
| 9448426 | Mach-zehnder modulator | — | 2016-09-20 |
| 9435950 | Semiconductor optical device | Kazuhiko Horino | 2016-09-06 |
| 9261649 | Method for manufacturing semiconductor optical waveguide device, and semiconductor optical waveguide device | Takamitsu Kitamura, Hideki Yagi | 2016-02-16 |
| 9229293 | Semiconductor optical device and method for manufacturing semiconductor optical device | Hideki Yagi, Takamitsu Kitamura | 2016-01-05 |
| 9229168 | Semiconductor optical waveguide device and method for manufacturing the same | Akira Furuya, Takamitsu Kitamura, Hideki Yagi | 2016-01-05 |
| 9217908 | Optical modulator | — | 2015-12-22 |
| 9176360 | Method for producing spot-size convertor | Hideki Yagi, Naoko Konishi, Takamitsu Kitamura | 2015-11-03 |
| 9081253 | Integrated optical device and optical module | — | 2015-07-14 |
| 9046703 | Optical modulator module and semiconductor optical modulator | Chie Fukuda, Morihiro Seki, Kazuhiro Yamaji, Yasuyuki Yamauchi, Keiji Tanaka +2 more | 2015-06-02 |