Ground fault overvoltage relay device
US-2018351345-A1 · Dec 6, 2018 · US
responsive to both voltage and current; responsive to phase angle between voltage and current
responsive to both voltage and current; responsive to phase angle between voltage and current · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H3/38 |
| Official title | responsive to both voltage and current; responsive to phase angle between voltage and current |
| Display label | responsive to both voltage and current; responsive to phase angle between voltage and current |
| Total patents | 221 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 15 |
| 2017 | 17 |
| 2018 | 18 |
| 2019 | 22 |
| 2020 | 28 |
| 2021 | 25 |
| 2022 | 25 |
| 2023 | 27 |
| 2024 | 16 |
| 2025 | 14 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Whip and loop interrupter combination
US-10148081-B2 · Dec 4, 2018 · US
System and method for controlling an electrical receptacle based on operational profile
US-2018331530-A1 · Nov 15, 2018 · US
Disconnect switch status in a power distribution system
US-2018316186-A1 · Nov 1, 2018 · US
Improvements in or relating to direct current distance protection controllers
US-2018301895-A1 · Oct 18, 2018 · US
Improved wireless hvac components
US-2018279222-A1 · Sep 27, 2018 · US
Battery energy storage system with arc flash protection, energy conversion system and protection method
US-10020650-B2 · Jul 10, 2018 · US
Method for determining a cause of a voltage outage load-side from a circuit breaker, auxiliary unit for a circuit breaker, electric system comprising a circuit breaker and one such auxiliary unit
US-10020153-B2 · Jul 10, 2018 · US
Apparatus and method for operating distributed generator in connection with power system
US-9997919-B2 · Jun 12, 2018 · US
DC circuit breaker device
US-9948089-B2 · Apr 17, 2018 · US
Circuit protective device fault diagnostic translator
US-9940812-B2 · Apr 10, 2018 · US
Replaceable electrical protection system for equipment under load
US-2018069392-A1 · Mar 8, 2018 · US
An electronic fuse circuit, corresponding device and method
US-2018062376-A1 · Mar 1, 2018 · US
Fault Detection and Protection During Steady State Using Traveling Waves
US-2018034258-A1 · Feb 1, 2018 · US
Power distribution system for connection to an ac voltage network
US-2018034260-A1 · Feb 1, 2018 · US
DC power generation system and protection method for DC power generation system
US-9866017-B2 · Jan 9, 2018 · US
Direct current circuit breaker
US-2018005783-A1 · Jan 4, 2018 · US
System and method for fault interruption with mems switches
US-2018006445-A1 · Jan 4, 2018 · US
Arc fault detection unit
US-2017343598-A1 · Nov 30, 2017 · US
Protection device and method for electronic device
US-9825454-B2 · Nov 21, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H3/38?
- CPC H02H3/38 is the Cooperative Patent Classification code for “responsive to both voltage and current; responsive to phase angle between voltage and current.”
- How many patents are filed under CPC H02H3/38 (responsive to both voltage and current; responsive to phase angle between voltage and current)?
- Our database includes 221 publications tagged with this CPC code.
- Is patent activity under CPC H02H3/38 growing?
- Publication counts under this code: 16 in 2024 vs 14 in 2025 (latest complete years).