Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12316383 | Wavelength cross connect device, multiband transmission system, and multiband transmission method | Hiroki Kawahara, Takeshi Seki, Kohei Saito | 2025-05-27 |
| 12244346 | Wavelength cross connect device and wavelength cross connect method | Hiroki Kawahara, Takeshi Seki, Kohei Saito | 2025-03-04 |
| 12207030 | Optical node device, optical transport network system, optical path trace method and program | Hiroki Kawahara, Takeshi Seki, Kohei Saito | 2025-01-21 |
| 11979226 | Wavelength cross connect device and wavelength cross connect method | Hiroki Kawahara, Takeshi Seki, Kohei Saito, Kenta Hirose | 2024-05-07 |
| 11824583 | Cyclic wavelength band replacement device, multi-band transmission system, and cyclic wavelength band replacement method | Hiroki Kawahara, Takeshi Seki, Kohei Saito, Kenta Hirose | 2023-11-21 |