Ground detecting apparatus and relay action detecting apparatus
US-9853440-B2 · Dec 26, 2017 · US
for AC systems
for AC systems · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H3/162 |
| Official title | {for AC systems} |
| Display label | for AC systems |
| Total patents | 256 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 28 |
| 2017 | 33 |
| 2018 | 22 |
| 2019 | 27 |
| 2020 | 31 |
| 2021 | 22 |
| 2022 | 16 |
| 2023 | 16 |
| 2024 | 22 |
| 2025 | 18 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Breaker design for power system resiliency
US-9825457-B2 · Nov 21, 2017 · US
Method and circuit for determining dispersion of electric power towards ground in electric appliances
US-9817052-B2 · Nov 14, 2017 · US
Ground fault circuit interrupter (GFCI) monitor
US-9762049-B2 · Sep 12, 2017 · US
Electrical wiring device with protective features
US-9728952-B2 · Aug 8, 2017 · US
Power switching arrangement for line insulation monitoring
US-2017222427-A1 · Aug 3, 2017 · US
Devices for ground-resistance detection
US-9722413-B2 · Aug 1, 2017 · US
Controllable test-pulse width and position for self-test ground fault circuit interrupter
US-2017214237-A1 · Jul 27, 2017 · US
Direct Current Power Distribution and Fault Protection
US-2017207622-A1 · Jul 20, 2017 · US
Self-testing auto monitor ground fault circuit interrupter (gfci) with power denial
US-2017155240-A1 · Jun 1, 2017 · US
Ground fault circuit interrupter using frequency recognition and measurement
US-2017125996-A1 · May 4, 2017 · US
Electric leakage determination circuit for electric leakage circuit breaker
US-9608432-B2 · Mar 28, 2017 · US
Self-testing auto monitor ground fault circuit interrupter (GFCI) with power denial
US-9595824-B2 · Mar 14, 2017 · US
System and method for automatic high resistance ground pulse activation and detection
US-2017059641-A1 · Mar 2, 2017 · US
Protective device for an electrical supply facility
US-2017054286-A9 · Feb 23, 2017 · US
Electrical wiring device
US-2017033550-A1 · Feb 2, 2017 · US
Protective Device with Self-Test
US-2017025846-A1 · Jan 26, 2017 · US
Ground fault circuit interrupter (gfci) monitor
US-2017025847-A1 · Jan 26, 2017 · US
Ground fault circuit interrupter (GFCI) monitor
US-9525282-B2 · Dec 20, 2016 · US
Multi-phase electric drive and method therefor
US-2016359424-A1 · Dec 8, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H3/162?
- CPC H02H3/162 is the Cooperative Patent Classification code for “for AC systems.”
- How many patents are filed under CPC H02H3/162 (for AC systems)?
- Our database includes 256 publications tagged with this CPC code.
- Is patent activity under CPC H02H3/162 growing?
- Publication counts under this code: 22 in 2024 vs 18 in 2025 (latest complete years).