Clock synchronization method, device, and system
US-2024421929-A1 · Dec 19, 2024 · US
Change of the master or reference, e.g. take-over or failure of the master
Change of the master or reference, e.g. take-over or failure of the master · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04J3/0641 |
| Official title | {Change of the master or reference, e.g. take-over or failure of the master} |
| Display label | Change of the master or reference, e.g. take-over or failure of the master |
| Total patents | 638 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 45 |
| 2016 | 53 |
| 2017 | 60 |
| 2018 | 35 |
| 2019 | 43 |
| 2020 | 39 |
| 2021 | 65 |
| 2022 | 80 |
| 2023 | 67 |
| 2024 | 71 |
| 2025 | 68 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and Device for Time Synchronization of Time Synchronization Domains
US-2024204898-A1 · Jun 20, 2024 · US
Systems and methods for large phase correction in r-phy network architectures
US-2024163001-A1 · May 16, 2024 · US
Clock Synchronization Method and Device and Communications System
US-2016374041-A1 · Dec 22, 2016 · US
Time domains in a PON
US-9497019-B2 · Nov 15, 2016 · US
White space usage for wireless local area network devices
US-9491756-B2 · Nov 8, 2016 · US
Transfer of synchronization in a hybrid global navigation satellite packet network system
US-2016248529-A1 · Aug 25, 2016 · US
Communication network nodes and methods performed therein
US-2016183207-A1 · Jun 23, 2016 · US
Method and apparatus for determining ethernet clock source
US-2016182214-A1 · Jun 23, 2016 · US
Systems and methods for synchronizing a plurality of rfid interrogators in a theatre of operation
US-2016162776-A1 · Jun 9, 2016 · US
Clock recovery in a packet based network
US-2016156427-A1 · Jun 2, 2016 · US
Communication apparatus, time synchronization system, and time synchronization method
US-2016119112-A1 · Apr 28, 2016 · US
Communication system, communication device, and communication method
US-9326259-B2 · Apr 26, 2016 · US
Time synchronization method for communication system, slave station apparatus, master station apparatus, control device, and program
US-9264213-B2 · Feb 16, 2016 · US
Base station synchronization
US-9247513-B2 · Jan 26, 2016 · US
System and method to dynamically redistribute timing and synchronization in a packet switched network
US-9219562-B2 · Dec 22, 2015 · US
Clock selection for synchronous Ethernet
US-9215092-B2 · Dec 15, 2015 · US
Synchronization control system
US-9209919-B2 · Dec 8, 2015 · US
Interworking agent adapted to interact between network and precision time protocol entities
US-9209921-B2 · Dec 8, 2015 · US
Interface circuit
US-9191136-B2 · Nov 17, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04J3/0641?
- CPC H04J3/0641 is the Cooperative Patent Classification code for “Change of the master or reference, e.g. take-over or failure of the master.”
- How many patents are filed under CPC H04J3/0641 (Change of the master or reference, e.g. take-over or failure of the master)?
- Our database includes 638 publications tagged with this CPC code.
- Is patent activity under CPC H04J3/0641 growing?
- Publication counts under this code: 71 in 2024 vs 68 in 2025 (latest complete years).