Packet capture ring: reliable, scalable packet capture for security applications
US-2018324107-A1 · Nov 8, 2018 · US
Interconnected ring systems
Interconnected ring systems · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04L2012/421 |
| Official title | {Interconnected ring systems} |
| Display label | Interconnected ring systems |
| Total patents | 156 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 19 |
| 2017 | 17 |
| 2018 | 13 |
| 2019 | 13 |
| 2020 | 13 |
| 2021 | 19 |
| 2022 | 15 |
| 2023 | 15 |
| 2024 | 9 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cluster topology aware container scheduling for efficient data transfer
US-2018314550-A1 · Nov 1, 2018 · US
Restoration method for an MPLS ring network
US-10110475-B2 · Oct 23, 2018 · US
Network-on-chip, data transmission method, and first switching node
US-2018227146-A1 · Aug 9, 2018 · US
Packet capture ring: reliable, scalable packet capture for security applications
US-10044634-B2 · Aug 7, 2018 · US
Ring network system using peripheral component interconnect express and setting method thereof
US-2018181529-A1 · Jun 28, 2018 · US
Well Construction Site Communications Network
US-2018152319-A1 · May 31, 2018 · US
Configuration method and apparatus for synchronization network
US-2018123717-A1 · May 3, 2018 · US
Communication Device and Communication System
US-2018091320-A1 · Mar 29, 2018 · US
Hierarchal label distribution and route installation in a loop-free routing topology using routing arcs at multiple hierarchal levels for ring topologies
US-9929938-B2 · Mar 27, 2018 · US
Packet capture ring: reliable, scalable packet capture for security applications
US-2018034716-A1 · Feb 1, 2018 · US
Method and apparatus for managing energy through virtualization by grouping terminal controllers
US-9853828-B2 · Dec 26, 2017 · US
Functional node for an information transmission network and corresponding network
US-9852313-B2 · Dec 26, 2017 · US
Receiver network component for operation in a communication network, communication network and method for operating a communication network
US-9832254-B2 · Nov 28, 2017 · US
Network topology of hierarchical ring with recursive shortcuts
US-9825844-B2 · Nov 21, 2017 · US
Multiple ring identification and configuration protocol
US-9819572-B2 · Nov 14, 2017 · US
Network management layer—configuration management
US-9806966-B2 · Oct 31, 2017 · US
Network switching systems and methods
US-9800521-B2 · Oct 24, 2017 · US
Communication system, communication apparatus, and protection method
US-9787496-B2 · Oct 10, 2017 · US
Network for transmitting information with at least two loops
US-9774472-B2 · Sep 26, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04L2012/421?
- CPC H04L2012/421 is the Cooperative Patent Classification code for “Interconnected ring systems.”
- How many patents are filed under CPC H04L2012/421 (Interconnected ring systems)?
- Our database includes 156 publications tagged with this CPC code.
- Is patent activity under CPC H04L2012/421 growing?
- Publication counts under this code: 9 in 2024 vs 8 in 2025 (latest complete years).