Parameter derivation method
US-9846183-B2 · Dec 19, 2017 · US
Measuring resistance to earth {, i.e. line to ground}
Measuring resistance to earth {, i.e. line to ground} · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01R27/18 |
| Official title | Measuring resistance to earth {, i.e. line to ground} |
| Display label | Measuring resistance to earth {, i.e. line to ground} |
| Total patents | 346 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 25 |
| 2016 | 23 |
| 2017 | 29 |
| 2018 | 29 |
| 2019 | 33 |
| 2020 | 37 |
| 2021 | 39 |
| 2022 | 41 |
| 2023 | 31 |
| 2024 | 30 |
| 2025 | 25 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Error detection device
US-2017299648-A1 · Oct 19, 2017 · US
Battery system with a battery, which is designed to supply a high-voltage network with electric energy, and a measuring device for measuring at least one insulation resistance of the battery
US-2017297447-A1 · Oct 19, 2017 · US
Method and apparatus for ground fault detection
US-9793854-B2 · Oct 17, 2017 · US
Isolation monitoring using a test signal of variable frequency
US-9720025-B2 · Aug 1, 2017 · US
Power distribution unit and fault detecting method
US-2017160761-A1 · Jun 8, 2017 · US
Method and system for monitoring electrical isolation
US-2017138995-A1 · May 18, 2017 · US
Device for detecting a defect in insulation
US-9606165-B2 · Mar 28, 2017 · US
Insulation monitoring device for simultaneously monitoring network sections of an ungrounded power supply system
US-9594110-B2 · Mar 14, 2017 · US
Method and device for insulation fault location having an adaptive test current determination
US-2017067953-A1 · Mar 9, 2017 · US
Pulse generator circuit arrangement and method for generating pulsed signals for insulation fault location in IT networks
US-9543756-B2 · Jan 10, 2017 · US
Apparatus and method for measuring insulation resistance of battery
US-9541608-B2 · Jan 10, 2017 · US
Insulation detector and electric apparatus
US-2016377670-A1 · Dec 29, 2016 · US
Ground reference fault detection in circuits with multiple ground references
US-2016363620-A1 · Dec 15, 2016 · US
Estimation of the insulation resistance between a motor vehicle battery and the earth
US-2016334452-A1 · Nov 17, 2016 · US
Devices for ground-resistance detection
US-2016313385-A1 · Oct 27, 2016 · US
Method for monitoring insulation faults in an electric network and vehicle comprising an insulation fault monitor
US-9470737-B2 · Oct 18, 2016 · US
Ground fault monitoring system
US-2016274166-A1 · Sep 22, 2016 · US
Earthed connection detection
US-9448272-B2 · Sep 20, 2016 · US
Two-wire resistance terminated ground check
US-2016245854-A1 · Aug 25, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01R27/18?
- CPC G01R27/18 is the Cooperative Patent Classification code for “Measuring resistance to earth {, i.e. line to ground}.”
- How many patents are filed under CPC G01R27/18 (Measuring resistance to earth {, i.e. line to ground})?
- Our database includes 346 publications tagged with this CPC code.
- Is patent activity under CPC G01R27/18 growing?
- Publication counts under this code: 30 in 2024 vs 25 in 2025 (latest complete years).