Optical transmission/reception system and optical transmission/reception method
US-12598405-B2 · Apr 7, 2026 · US
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Nakagawa Masahiro patents
Nakagawa Masahiro is listed as an inventor on 47 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Nakagawa Masahiro |
| Total patents | 47 |
| First publication | May 14, 2015 |
| Latest publication | Apr 7, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Wavelength cross connect device, and wavelength cross connect method
US-12563323-B2 · Feb 24, 2026 · US
Calculation device, network device, calculation method and program
US-2026005763-A1 · Jan 1, 2026 · US
Connector
US-2025364735-A1 · Nov 27, 2025 · US
Optical signal processing device, tap coefficient update method, program, and optical signal processing system
US-2025337517-A1 · Oct 30, 2025 · US
Connector unit and wire harness
US-2025260197-A1 · Aug 14, 2025 · US
Time transmission correction device, time transmission system, and delay measurement method
US-12204291-B2 · Jan 21, 2025 · US
Burst optical relaying device and burst optical relaying method
US-12191904-B2 · Jan 7, 2025 · US
Wavelength cross connect device, and wavelength cross connect method
US-2024422456-A1 · Dec 19, 2024 · US
Wavelength cross connect device, and wavelength cross connect method
US-2024373152-A1 · Nov 7, 2024 · US
Recent patents
Latest publications not already listed above.
Wavelength cross connect device, and wavelength cross connect method
US-2024283557-A1 · Aug 22, 2024 · US
Wavelength cross connect device, and wavelength cross connect method
US-2024284079-A1 · Aug 22, 2024 · US
Optical transmission/reception system and optical transmission/reception method
US-2024223921-A1 · Jul 4, 2024 · US
Transmission device, time transmission system, and delay compensation method
US-11855760-B2 · Dec 26, 2023 · US
Transmission device, time transmission system, and delay compensation method
US-11791922-B2 · Oct 17, 2023 · US
Optical branch insertion device and optical transmission system using optical branch insertion device
US-11757554-B2 · Sep 12, 2023 · US
Time transmission device and transmission method
US-11750358-B2 · Sep 5, 2023 · US
Optical branch insertion device and optical transmission system using optical branch insertion device
US-11742976-B2 · Aug 29, 2023 · US
Time synchronization path selection device and time synchronization path selection method
US-11722288-B2 · Aug 8, 2023 · US
Connecter terminal structure
US-11705656-B2 · Jul 18, 2023 · US
Burst optical relaying device and burst optical relaying method
US-2023155673-A1 · May 18, 2023 · US
Optical demultiplexer, optical separation device, optical transmission system, and optical transmission method
US-11652563-B2 · May 16, 2023 · US
Time comparison device and time quality monitoring method
US-11638228-B2 · Apr 25, 2023 · US
Optical demultiplexer, optical separation device, optical transmission system, and optical transmission method
US-2022360355-A1 · Nov 10, 2022 · US
Double-flowered Pentas plant and method for growing same
US-11464196-B2 · Oct 11, 2022 · US
Transmission device, time transmission system, and delay compensation method
US-2022294549-A1 · Sep 15, 2022 · US
Transmission device, time transmission system, and delay measurement method
US-11438857-B2 · Sep 6, 2022 · US
Optical branch insertion device and optical transmission system using optical branch insertion device
US-2022182169-A1 · Jun 9, 2022 · US
Connecter terminal structure
US-2022173541-A1 · Jun 2, 2022 · US
Optical branch insertion device and optical transmission system using optical branch insertion device
US-2022149968-A1 · May 12, 2022 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Nippon Telegraph & Telephone | 33 |
| Yazaki Corp | 5 |
| Nikon Corp | 4 |
| Ntt Inc | 2 |
| Sakata Seed Corp | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H04J3/0667 | 10 |
| G04G5/00 | 8 |
| H04B10/27 | 7 |
| H04J14/0212 | 6 |
| H04B10/275 | 6 |