Issued Patents 2023
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11757554 | Optical branch insertion device and optical transmission system using optical branch insertion device | Masahiro Nakagawa, Hidetoshi Onda | 2023-09-12 |
| 11742976 | Optical branch insertion device and optical transmission system using optical branch insertion device | Masahiro Nakagawa, Hidetoshi Onda | 2023-08-29 |
| 11689294 | Optical receiver | Toshiya Matsuda, Kazuyuki Matsumura | 2023-06-27 |
| 11652563 | Optical demultiplexer, optical separation device, optical transmission system, and optical transmission method | Masahiro Nakagawa, Hidetoshi Onda | 2023-05-16 |
| 11595120 | Optical transmission system and unused channel verification method | Toshiya Matsuda | 2023-02-28 |