| 12153325 |
Wavelength converter |
Nobutatsu Koshobu, Takeshi Umeki, Osamu Tadanaga, Takahiro Kashiwazaki, Takushi Kazama +1 more |
2024-11-26 |
| 12085836 |
Optical amplifier |
Takushi Kazama, Takeshi Umeki, Takahiro Kashiwazaki, Osamu Tadanaga, Nobutatsu Koshobu +2 more |
2024-09-10 |
| 12032269 |
Wavelength conversion apparatus |
Osamu Tadanaga, Takeshi Umeki, Asuka Inoue, Ryoichi Kasahara, Takahiro Kashiwazaki +2 more |
2024-07-09 |
| 12007666 |
Wavelength conversion element and method for producing same |
Takahiro Kashiwazaki, Takeshi Umeki, Ryoichi Kasahara, Osamu Tadanaga, Takushi Kazama |
2024-06-11 |
| 11971644 |
Wavelength conversion device |
Ryoichi Kasahara, Osamu Tadanaga, Takeshi Umeki, Takahiro Kashiwazaki, Takushi Kazama |
2024-04-30 |
| 11892745 |
Wavelength conversion element and method for manufacturing same |
Takushi Kazama, Takahiro Kashiwazaki, Osamu Tadanaga, Ryoichi Kasahara, Takeshi Umeki |
2024-02-06 |
| 11888528 |
Optical communication system |
Takushi Kazama, Takeshi Umeki, Takahiro Kashiwazaki, Osamu Tadanaga, Nobutatsu Koshobu +2 more |
2024-01-30 |