Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11973579 | Add/drop multiplexer, network system, transmission method, non-transitory computer readable medium, and management device | — | 2024-04-30 |
| 11626937 | Optical transmission apparatus and control method of optical transmission apparatus | Takefumi Oguma | 2023-04-11 |
| 11431431 | Add/drop multiplexer, network system, transmission method, non-transitory computer readable medium, and management device | — | 2022-08-30 |
| 11095387 | Add/drop multiplexer, network system, transmission method, non-transitory computer readable medium, and management device | — | 2021-08-17 |
| 10659165 | Optical transmission device | Takefumi Oguma | 2020-05-19 |
| 10539741 | Optical device with optical filters and processing method of optical signals | Takefumi Oguma | 2020-01-21 |
| 10374740 | Add/drop multiplexer, network system, transmission method, non-transitory computer readable medium, and management device | — | 2019-08-06 |