Protection of low-voltage distribution networks
US-11921170-B2 · Mar 5, 2024 · US
for three-phase systems
for three-phase 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 | H02H3/165 |
| Official title | {for three-phase systems} |
| Display label | for three-phase systems |
| Total patents | 167 |
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 | 14 |
| 2016 | 7 |
| 2017 | 16 |
| 2018 | 12 |
| 2019 | 21 |
| 2020 | 13 |
| 2021 | 31 |
| 2022 | 13 |
| 2023 | 21 |
| 2024 | 9 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and control system for fault direction detection
US-2019271730-A1 · Sep 5, 2019 · US
Slip ring unit for a rotor of an electrically excited rotary dynamo-electric machine
US-10389074-B2 · Aug 20, 2019 · US
Method and device for shutting down an installation part exhibiting an insulation fault in an ungrounded power supply system
US-10340680-B2 · Jul 2, 2019 · US
Method and means for complex, universal earth fault protection in power high and medium voltage system
US-10320184-B2 · Jun 11, 2019 · US
Apparatus for determination of a ground fault and associated method
US-2019146021-A1 · May 16, 2019 · US
Ground fault current interrupter circuit
US-2019148930-A1 · May 16, 2019 · US
Method and control system for faulted phase detection
US-2019072603-A1 · Mar 7, 2019 · US
Electric ground fault detection system and method
US-2019049507-A1 · Feb 14, 2019 · US
Method for detecting an open-phase condition of a transformer
US-2019027919-A1 · Jan 24, 2019 · US
Method and system for detecting miswiring of a power supply for a domestic appliance
US-2019027920-A1 · Jan 24, 2019 · US
Ground fault overvoltage relay device
US-2018351345-A1 · Dec 6, 2018 · US
Electric ground fault detection system and method
US-10132850-B2 · Nov 20, 2018 · US
Method and system for detecting miswiring of a power supply for a domestic appliance
US-10109996-B2 · Oct 23, 2018 · US
Method for detecting an open-phase condition of a transformer
US-10090665-B2 · Oct 2, 2018 · US
Ground fault isolation for power converters with silicon carbide MOSFETs
US-10027240-B1 · Jul 17, 2018 · US
Ground fault isolation for power converters with silicon carbide mosfets
US-2018198376-A1 · Jul 12, 2018 · US
Two-wire resistance terminated ground check
US-9989576-B2 · Jun 5, 2018 · US
Slip ring unit for a rotor of an electrically excited rotary dynamo-electric machine
US-2018131149-A1 · May 10, 2018 · US
Ground fault immune sensor power supply for downhole sensors
US-9935453-B2 · Apr 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H3/165?
- CPC H02H3/165 is the Cooperative Patent Classification code for “for three-phase systems.”
- How many patents are filed under CPC H02H3/165 (for three-phase systems)?
- Our database includes 167 publications tagged with this CPC code.
- Is patent activity under CPC H02H3/165 growing?
- Publication counts under this code: 9 in 2024 vs 8 in 2025 (latest complete years).