Issued Patents 2023
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11824583 | Cyclic wavelength band replacement device, multi-band transmission system, and cyclic wavelength band replacement method | Hiroki Kawahara, Sachio Suda, Kohei Saito, Kenta Hirose | 2023-11-21 |
| 11750317 | Wavelength cross connect device and cross connect connection method | Hiroki Kawahara | 2023-09-05 |
| 11722235 | Optical branch insertion device and optical branch insertion method | Hiroki Kawahara | 2023-08-08 |
| 11696056 | Optical transmission system and optical transmission method | Hiroto TAKECHI, Katsuhiro Araya, Masatoshi Namiki, Hiroki Kawahara | 2023-07-04 |
| 11677489 | Wavelength cross connect device, branch ratio variable method, and program | Hiroki Kawahara | 2023-06-13 |