| 12346000 |
Planar optical waveguide device for measuring amplitude phase of squeezed light |
Asuka Inoue, Takeshi Umeki, Osamu Tadanaga, Koji Embutsu, Nobutatsu Koshobu +2 more |
2025-07-01 |
| 12339564 |
Wavelength conversion apparatus |
Takahiro Kashiwazaki, Koji Embutsu, Takeshi Umeki, Osamu Tadanaga, Takushi Kazama +2 more |
2025-06-24 |
| 12085836 |
Optical amplifier |
Takushi Kazama, Takeshi Umeki, Takahiro Kashiwazaki, Osamu Tadanaga, Koji Embutsu +2 more |
2024-09-10 |
| 12044883 |
Optical waveguide and manufacturing method thereof |
Yuji Fujiwara, Satomi Katayose |
2024-07-23 |
| 12032269 |
Wavelength conversion apparatus |
Koji Embutsu, Osamu Tadanaga, Takeshi Umeki, Asuka Inoue, Takahiro Kashiwazaki +2 more |
2024-07-09 |
| 12007666 |
Wavelength conversion element and method for producing same |
Takahiro Kashiwazaki, Takeshi Umeki, Osamu Tadanaga, Koji Embutsu, Takushi Kazama |
2024-06-11 |
| 11988873 |
End structure of a waveguide |
Katsuhiko Hirabayashi, Satomi Katayose, Yuji Fujiwara |
2024-05-21 |
| 11971644 |
Wavelength conversion device |
Koji Embutsu, Osamu Tadanaga, Takeshi Umeki, Takahiro Kashiwazaki, Takushi Kazama |
2024-04-30 |
| 11960152 |
Method for adjusting transmitted wavelength of signal light transmitted through optical waveguide device |
Katsuhiko Hirabayashi, Nobutatsu Koshobu, Satomi Katayose |
2024-04-16 |
| 11892745 |
Wavelength conversion element and method for manufacturing same |
Takushi Kazama, Takahiro Kashiwazaki, Osamu Tadanaga, Koji Embutsu, Takeshi Umeki |
2024-02-06 |
| 11888528 |
Optical communication system |
Takushi Kazama, Takeshi Umeki, Takahiro Kashiwazaki, Osamu Tadanaga, Koji Embutsu +2 more |
2024-01-30 |
| 11852953 |
Optical element and manufacturing method thereof |
Takeshi Umeki, Takushi Kazama, Takahiro Kashiwazaki, Koji Embutsu, Osamu Tadanaga +1 more |
2023-12-26 |
| 11835768 |
Filling resin and optical waveguide circuit filled with filling resin |
Katsuhiko Hirabayashi, Nobutatsu Koshobu |
2023-12-05 |
| 11815785 |
Wavelength conversion optical element |
Takahiro Kashiwazaki, Takeshi Umeki, Osamu Tadanaga, Koji Embutsu, Takushi Kazama +1 more |
2023-11-14 |
| 11768421 |
Wavelength conversion device |
Osamu Tadanaga, Takeshi Umeki, Koji Embutsu, Nobutatsu Koshobu, Takahiro Kashiwazaki +2 more |
2023-09-26 |
| 11740537 |
Optical signal processing circuit |
Takeshi Umeki, Takushi Kazama, Koji Embutsu, Takahiro Kashiwazaki, Osamu Tadanaga +1 more |
2023-08-29 |
| 11733469 |
Planar lightwave circuit and optical device |
Yuji Fujiwara, Satomi Katayose, Takahiro Kashiwazaki, Junji Sakamoto |
2023-08-22 |
| 11733584 |
Wavelength conversion apparatus |
Koji Embutsu, Nobutatsu Koshobu, Takeshi Umeki, Osamu Tadanaga, Takushi Kazama +1 more |
2023-08-22 |
| 11644735 |
Wavelength conversion element |
Osamu Tadanaga, Takahiro Kashiwazaki, Takushi Kazama, Takeshi Umeki, Koji Embutsu +1 more |
2023-05-09 |
| 11635641 |
Planar-lightwave-type optical device |
Ai Yanagihara, Kenya Suzuki, Kazunori Seno, Yuko Kawajiri |
2023-04-25 |
| 11442225 |
Wavelength conversion element and method for manufacturing wavelength conversion element |
Takahiro Kashiwazaki, Osamu Tadanaga, Takeshi Umeki, Koji Embutsu, Takushi Kazama |
2022-09-13 |
| 11385521 |
Wavelength conversion apparatus |
Takeshi Umeki, Takushi Kazama, Koji Embutsu, Takahiro Kashiwazaki, Osamu Tadanaga |
2022-07-12 |
| 11387909 |
Optical signal transmitter |
Takushi Kazama, Takeshi Umeki, Takahiro Kashiwazaki, Koji Embutsu, Osamu Tadanaga |
2022-07-12 |
| 11324435 |
Heartbeat detection method and heartbeat detection device |
Nobuaki Matsuura, Kei Kuwabara, Takayuki Ogasawara, Koji Fujii |
2022-05-10 |
| 11269139 |
Waveguide type optical interferometer circuit |
Nobutatsu Koshoubu, Katsuhiko Hirabayashi |
2022-03-08 |