Data transmission method, data transmission device, and storage medium
US-12587482-B2 · Mar 24, 2026 · US
Switchboards
Switchboards · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04L12/04 |
| Official title | Switchboards |
| Display label | Switchboards |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 7 |
| 2020 | 6 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 4 |
| 2024 | 3 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Modular system (switch boards and mid-plane) for supporting 50G or 100G ethernet speeds of FPGA+SSD
US-12556417-B2 · Feb 17, 2026 · US
Communication Unit for a Communication System
US-2026046153-A1 · Feb 12, 2026 · US
Data transmission method, data transmission device, and storage medium
US-2024323127-A1 · Sep 26, 2024 · US
Adaptive backoff time in power-over-ethernet detection cycles
US-11949522-B2 · Apr 2, 2024 · US
Authentication device, network device, communication system, authentication method, and non-transitory computer readable medium
US-11902776-B2 · Feb 13, 2024 · US
Authentication device, network device, communication system, authentication method, and non-transitory computer readable medium
US-2023108376-A1 · Apr 6, 2023 · US
Modular system (switchboards and mid-plane) for supporting 50g or 100g ethernet speeds of fpga+ssd
US-2023085624-A1 · Mar 23, 2023 · US
Adaptive backoff time in power-over-ethernet detection cycles
US-2023038813-A1 · Feb 9, 2023 · US
Method and user equipment for handling of integrity check failures of PDCP PDUS
US-11564097-B2 · Jan 24, 2023 · US
Authentication device, network device, communication system, authentication method, and non-transitory computer readable medium
US-11540125-B2 · Dec 27, 2022 · US
Hardware based packet replication at tail end node
US-11218336-B2 · Jan 4, 2022 · US
Security key derivation for handover
US-11071021-B2 · Jul 20, 2021 · US
Modular system (switch boards and mid-plane) for supporting 50g or 100g ethernet speeds of fpga+ssd
US-2020412557-A1 · Dec 31, 2020 · US
Hardware based packet replication at tail end node
US-2020235959-A1 · Jul 23, 2020 · US
Method and user equipment for handling of integrity check failures of pdcp pdus
US-2020205003-A1 · Jun 25, 2020 · US
Hardware based packet replication at tail end node
US-10623207-B2 · Apr 14, 2020 · US
Method and service-providing server for secure transmission of user-authenticating information
US-10594498-B2 · Mar 17, 2020 · US
Authentication device, network device, communication system, authentication method, and non-transitory computer readable medium
US-2020014535-A1 · Jan 9, 2020 · US
Method and service-providing server for secure transmission of user-authenticating information
US-2019296920-A1 · Sep 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04L12/04?
- CPC H04L12/04 is the Cooperative Patent Classification code for “Switchboards.”
- How many patents are filed under CPC H04L12/04 (Switchboards)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC H04L12/04 growing?
- Publication counts under this code: 4 in 2023 vs 3 in 2024 (latest complete years).