Communication controller short protection
US-2020303916-A1 · Sep 24, 2020 · US
Fault detection by injection of an auxiliary voltage (same for detection of earth fault currents H02H3/17; for monitoring earth connection H02H5/105)
Fault detection by injection of an auxiliary voltage (same for detection of earth fault currents H02H3/17; for monitoring earth connection H02H5/105) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H1/003 |
| Official title | {Fault detection by injection of an auxiliary voltage (same for detection of earth fault currents H02H3/17; for monitoring earth connection H02H5/105)} |
| Display label | Fault detection by injection of an auxiliary voltage (same for detection of earth fault currents H02H3/17; for monitoring earth connection H02H5/105) |
| Total patents | 117 |
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 | 10 |
| 2016 | 11 |
| 2017 | 12 |
| 2018 | 10 |
| 2019 | 10 |
| 2020 | 11 |
| 2021 | 16 |
| 2022 | 8 |
| 2023 | 14 |
| 2024 | 7 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Abnormality detection device
US-2020182946-A1 · Jun 11, 2020 · US
Integrated capacitive discharge electrical bonding assurance system
US-2020169096-A1 · May 28, 2020 · US
Inverter for a photovoltaic plant
US-2020144963-A1 · May 7, 2020 · US
Electric circuit arrangement and method for coupling an insulation monitoring device to an ungrounded power supply system
US-2020116778-A1 · Apr 16, 2020 · US
Temperature monitoring
US-10615736-B2 · Apr 7, 2020 · US
Electrical fault detection
US-10591517-B2 · Mar 17, 2020 · US
Semiconductor device, control method of semiconductor device, and feeding system
US-10491102-B2 · Nov 26, 2019 · US
Monitor device, ground fault protection circuit and techniques
US-2019288502-A1 · Sep 19, 2019 · US
Monitor device, ground fault protection circuit and techniques
US-2019288499-A1 · Sep 19, 2019 · US
Ground fault detection for light-emitting element drive device
US-10333024-B2 · Jun 25, 2019 · US
Integrated capacitive discharge electrical bonding assurance system
US-2019173296-A1 · Jun 6, 2019 · US
Electrical link comprising an electrical protection device
US-2019148928-A1 · May 16, 2019 · US
Smart sensor network for power grid health monitoring
US-10261119-B2 · Apr 16, 2019 · US
Fault identification and isolation in an electric propulsion system
US-10243355-B2 · Mar 26, 2019 · US
Temperature monitoring
US-2019089291-A1 · Mar 21, 2019 · US
Fault location using traveling waves
US-10228409-B2 · Mar 12, 2019 · US
Electrical link comprising an electrical protection device - current bias
US-2018323602-A1 · Nov 8, 2018 · US
Light-emitting element drive device
US-2018254379-A1 · Sep 6, 2018 · US
Current measurement
US-2018252750-A1 · Sep 6, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H1/003?
- CPC H02H1/003 is the Cooperative Patent Classification code for “Fault detection by injection of an auxiliary voltage (same for detection of earth fault currents H02H3/17; for monitoring earth connection H02H5/105).”
- How many patents are filed under CPC H02H1/003 (Fault detection by injection of an auxiliary voltage (same for detection of earth fault currents H02H3/17; for monitoring earth connection H02H5/105))?
- Our database includes 117 publications tagged with this CPC code.
- Is patent activity under CPC H02H1/003 growing?
- Publication counts under this code: 7 in 2024 vs 6 in 2025 (latest complete years).