Network protector that detects an error condition
US-12597767-B2 · Apr 7, 2026 · US
responsive to the appearance of harmonics
responsive to the appearance of harmonics · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H3/52 |
| Official title | responsive to the appearance of harmonics |
| Display label | responsive to the appearance of harmonics |
| Total patents | 50 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 8 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Arc fault detection using machine learning
US-2025192537-A1 · Jun 12, 2025 · US
Arc fault detection using machine learning
US-12230953-B2 · Feb 18, 2025 · US
Monitoring assembly and system having a monitoring assembly
US-2024345141-A1 · Oct 17, 2024 · US
Calculating electric power noise distributions
US-12055576-B2 · Aug 6, 2024 · US
Abnormality diagnosis device, abnormality diagnosis method, and abnormality diagnosis system
US-11953555-B2 · Apr 9, 2024 · US
Calculating electric power noise distributions
US-2024077529-A1 · Mar 7, 2024 · US
Fault detection in a power distribution system providing high voltage direct current through multiple channels with a floating ground
US-2023408601-A1 · Dec 21, 2023 · US
Method of identifying when to initiate control sequences
US-11689009-B2 · Jun 27, 2023 · US
Effective feature set-based high impedance fault detection
US-11656263-B2 · May 23, 2023 · US
Network protector that detects an error condition
US-2023136795-A1 · May 4, 2023 · US
Systems and methods for high-speed falling conductor protection in electric transmission systems
US-2023080160-A1 · Mar 16, 2023 · US
Arc fault detection using machine learning
US-2023053431-A1 · Feb 23, 2023 · US
Temporary overvoltage and ground fault overvoltage protection based on arrester current measurement and analysis
US-11435409-B2 · Sep 6, 2022 · US
Method of identifying when to initiate control sequences
US-2022216725-A1 · Jul 7, 2022 · US
Determining a fault location on a powerline
US-2022128613-A1 · Apr 28, 2022 · US
Metering and communications for distributed energy resource devices
US-11316348-B2 · Apr 26, 2022 · US
Method of identifying when to initiate control sequences
US-11296542-B2 · Apr 5, 2022 · US
Method of identifying when to initiate control sequences
US-2021143669-A1 · May 13, 2021 · US
Arc detection device, corresponding method, and electronic component
US-10998707-B2 · May 4, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H3/52?
- CPC H02H3/52 is the Cooperative Patent Classification code for “responsive to the appearance of harmonics.”
- How many patents are filed under CPC H02H3/52 (responsive to the appearance of harmonics)?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC H02H3/52 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).