Fault classification and zone identification in a power transmission system
US-2025149874-A1 · May 8, 2025 · US
This page is not indexed by search engines while we improve data quality.
involving comparison of phase voltages
involving comparison of phase voltages · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H3/353 |
| Official title | involving comparison of phase voltages |
| Display label | involving comparison of phase voltages |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fault classification and zone identification in a power transmission system
US-12278472-B2 · Apr 15, 2025 · US
Determining method and apparatus for working voltage of isolated neutral system
US-2024241160-A1 · Jul 18, 2024 · US
Fault classification and zone identification in a power transmission system
US-2024063626-A1 · Feb 22, 2024 · US
Power conversion apparatus that judges system power failure based on system frequency and voltage
US-11527966-B2 · Dec 13, 2022 · US
Location of a ground fault in an IT network
US-11307236-B2 · Apr 19, 2022 · US
Power conversion apparatus
US-2021288592-A1 · Sep 16, 2021 · US
Method for controlling a leakage current protection device in a photovoltaic apparatus
US-10965117-B2 · Mar 30, 2021 · US
Ground fault overvoltage relay device
US-10714924-B2 · Jul 14, 2020 · US
Location of a ground fault in an it network
US-2020166558-A1 · May 28, 2020 · US
A method for controlling a leakage current protection device in a photovoltaic apparatus
US-2019393695-A1 · Dec 26, 2019 · US
Safety detection device and method of grid-connected inverter
US-10505370-B2 · Dec 10, 2019 · US
Detection of cross-country faults
US-10474142-B2 · Nov 12, 2019 · US
Detection of cross-country faults
US-2019094845-A1 · Mar 28, 2019 · US
Method and device for controlling opening/closing of circuit breaker
US-2019027917-A1 · Jan 24, 2019 · US
Ground fault overvoltage relay device
US-2018351345-A1 · Dec 6, 2018 · US
Method and apparatus for adaptive ac/dc surge protection
US-2018233897-A1 · Aug 16, 2018 · US
Method and apparatus for detecting vector shift
US-10041985-B2 · Aug 7, 2018 · US
Safety detection device and method of grid-connected inverter
US-2017237262-A1 · Aug 17, 2017 · US
Method and apparatus for detecting vector shift
US-2016334446-A1 · Nov 17, 2016 · US