Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11177623 | Optical device and method of manufacturing the same | Keizo Kinoshita | 2021-11-16 |
| 10958036 | Semiconductor light-emitting device and optical device | — | 2021-03-23 |
| 9964704 | Spot size converter, light source, optical transmitter, optical receiver and optical transmitter-receiver | Masashige Ishizaka, Takanori Shimizu | 2018-05-08 |
| 9904011 | Optical waveguide, optical interposer and light source | Masashige Ishizaka, Takanori Shimizu | 2018-02-27 |
| 9871347 | Semiconductor light emitting device and optical transceiver | Masashige Ishizaka, Takanori Shimizu, Yasuhiko Arakawa, Satoshi Iwamoto, Katsuaki Tanabe | 2018-01-16 |
| 9612411 | Semiconductor optical waveguide device with an anti-reflection diffraction grating formed on both lateral sides of a core layer along a direction of optical propagation | Masashige Ishizaka, Takanori Shimizu | 2017-04-04 |
| 9429706 | Optical waveguide coupler and method for manufacturing same | Masashige Ishizaka, Takanori Shimizu | 2016-08-30 |
| 9297956 | Optical device, optical transmitter, optical receiver, optical transceiver, and method of manufacturing optical device | Masashige Ishizaka, Takanori Shimizu | 2016-03-29 |
| 9235000 | Optical semiconductor apparatus | Masashige Ishizaka, Takanori Shimizu | 2016-01-12 |
| 9195001 | Spot size converter, optical transmitter, optical receiver, optical transceiver, and method of manufacturing spot size converter | Masashige Ishizaka, Takanori Shimizu | 2015-11-24 |
| 9151894 | Light source circuit and light source device equipped with same | Makoto Okano, Masahiko Mori, Masashige Ishizaka, Takanori Shimizu | 2015-10-06 |
| 9128240 | Spot-size converter, manufacturing method thereof, and integrated optical circuit device | Masashige Ishizaka, Takanori Shimizu | 2015-09-08 |
| 9130352 | Optical semiconductor device, light emitting device, optical transmitting device, and method of manufacturing optical semiconductor device | Masashige Ishizaka, Takanori Shimizu | 2015-09-08 |
| 8906721 | Semiconductor light emitting device and method for manufacturing the same | Tsuyoshi Yamamoto, Manabu Matsuda, Yasuhiko Arakawa | 2014-12-09 |
| 8891578 | Optical semiconductor device having diffraction grating disposed on both sides of waveguide and its manufacture method | Tsuyoshi Yamamoto, Yasuhiko Arakawa | 2014-11-18 |
| 8802468 | Semiconductor light emitting device and fabrication method for semiconductor light emitting device | Tsuyoshi Yamamoto, Hisao Sudo, Yasuhiko Arakawa | 2014-08-12 |
| 8729526 | Optical semiconductor device and method of manufacturing optical semiconductor device | — | 2014-05-20 |
| 8483252 | Semiconductor light emitting device and fabrication method for semiconductor light emitting device | Tsuyoshi Yamamoto, Hisao Sudo, Yasuhiko Arakawa | 2013-07-09 |
| 8304757 | Semiconductor light-emitting device, optical module, transmitter, and optical communication system | Tsuyoshi Yamamoto | 2012-11-06 |
| 8232125 | Optical semiconductor device having active layer of p-type quantum dot structure and its manufacture method | Tsuyoshi Yamamoto, Hisao Sudo, Yasuhiko Arakawa | 2012-07-31 |
| 7835418 | Optical semiconductor device having diffraction grating disposed on both sides of waveguide and its manufacture method | Tsuyoshi Yamamoto, Yasuhiko Arakawa | 2010-11-16 |
| 7738523 | Optical semiconductor device having diffraction grating | Tsuyoshi Yamamoto, Yasuhiko Arakawa | 2010-06-15 |
| 7573060 | Optical semiconductor device having active layer of p-type quantum dot structure and its manufacture method | Tsuyoshi Yamamoto, Hisao Sudo, Yasuhiko Arakawa | 2009-08-11 |
| 7522647 | Semiconductor laser and method of fabricating the same | Tsuyoshi Yamamoto, Koji Otsubo, Yasuhiko Arakawa | 2009-04-21 |
| 7081983 | Wavelength conversion device | Tomoyuki Akiyama, Mitsuru Sugawara | 2006-07-25 |