Frequency dependent ground fault interrupt
US-2023251328-A1 · Aug 10, 2023 · US
involving voltage comparison (H02H3/347 takes precedence)
involving voltage comparison (H02H3/347 takes precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H3/325 |
| Official title | {involving voltage comparison (H02H3/347 takes precedence)} |
| Display label | involving voltage comparison (H02H3/347 takes precedence) |
| Total patents | 80 |
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 | 2 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 7 |
| 2021 | 16 |
| 2022 | 15 |
| 2023 | 9 |
| 2024 | 9 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Circuit interrupting device for providing ground fault and open neutral protection in temporary power applications
US-2023170684-A1 · Jun 1, 2023 · US
Frequency dependent ground fault interrupt
US-11635474-B2 · Apr 25, 2023 · US
Circuit interrupting device for providing ground fault and open neutral protection in temporary power applications
US-11575255-B2 · Feb 7, 2023 · US
Leakage protection circuit, method and drive device
US-11490483-B2 · Nov 1, 2022 · US
Electronic circuit breaker
US-2022344927-A1 · Oct 27, 2022 · US
Earth leakage breaker and method for controlling earth leakage breaker
US-11456140-B2 · Sep 27, 2022 · US
Device for Discharging over Voltages and its Use
US-2022302681-A1 · Sep 22, 2022 · US
Leakage protection circuit, leakage protection method and load driving circuit
US-11411383-B2 · Aug 9, 2022 · US
Self-check chip of leakage protector
US-2022216688-A1 · Jul 7, 2022 · US
Short-circuit mitigation device
US-2022200263-A1 · Jun 23, 2022 · US
Ground fault protection in a high resistance grounding system
US-11362507-B2 · Jun 14, 2022 · US
Measurement system and method for determining a status of a power system in a vehicle using the measurement system
US-2022137148-A1 · May 5, 2022 · US
Electrical fault detection device and vehicle power supply system
US-2022120823-A1 · Apr 21, 2022 · US
Circuit interrupting device for providing ground fault and open neutral protection in temporary power applications
US-2022123545-A1 · Apr 21, 2022 · US
Method and apparatus for operating a power distribution system
US-11296491-B2 · Apr 5, 2022 · US
Electroplated AC charger with monitoring and diagnostic system
US-11279244-B2 · Mar 22, 2022 · US
Ground fault protection in a high resistance grounding system
US-2022045500-A1 · Feb 10, 2022 · US
Earth leakage breaker and method for controlling earth leakage breaker
US-2022013318-A1 · Jan 13, 2022 · US
Circuit interrupting device for providing ground fault and open neutral protection in temporary power applications
US-11211782-B2 · Dec 28, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H3/325?
- CPC H02H3/325 is the Cooperative Patent Classification code for “involving voltage comparison (H02H3/347 takes precedence).”
- How many patents are filed under CPC H02H3/325 (involving voltage comparison (H02H3/347 takes precedence))?
- Our database includes 80 publications tagged with this CPC code.
- Is patent activity under CPC H02H3/325 growing?
- Publication counts under this code: 9 in 2024 vs 6 in 2025 (latest complete years).