Systems, apparatuses, and methods for off-axis multi-turn position sensing
US-2025231049-A1 · Jul 17, 2025 · US
Measuring number of turns; Measuring transformation ratio or coupling factor of windings
Measuring number of turns; Measuring transformation ratio or coupling factor of windings · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01R29/20 |
| Official title | Measuring number of turns; Measuring transformation ratio or coupling factor of windings |
| Display label | Measuring number of turns; Measuring transformation ratio or coupling factor of windings |
| Total patents | 32 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Checking apparatus for checking a number of start cycles of a detection device of a motor vehicle, and method
US-12313662-B2 · May 27, 2025 · US
Transformer Apparatus
US-2025125088-A1 · Apr 17, 2025 · US
Transformer apparatus
US-12217904-B2 · Feb 4, 2025 · US
Transformer turns number testing circuit
US-2024418760-A1 · Dec 19, 2024 · US
Transformer Apparatus
US-2024062952-A1 · Feb 22, 2024 · US
Transformer apparatus
US-11798733-B2 · Oct 24, 2023 · US
Checking Apparatus for Checking a Number of Start Cycles of a Detection Device of a Motor Vehicle, and Method
US-2023023763-A1 · Jan 26, 2023 · US
Optical monitoring to detect contamination of power grid components
US-11555864-B2 · Jan 17, 2023 · US
Resettable closed-loop multi-turn magnetic sensor
US-11448528-B2 · Sep 20, 2022 · US
Polyphase inductive filter
US-11448678-B2 · Sep 20, 2022 · US
Optical monitoring to detect contamination of power grid components
US-2022107366-A1 · Apr 7, 2022 · US
Transformer Apparatus
US-2022084742-A1 · Mar 17, 2022 · US
Optical monitoring to detect contamination of power grid components
US-11163017-B2 · Nov 2, 2021 · US
Optical monitoring to detect contamination of power grid components
US-2021123964-A1 · Apr 29, 2021 · US
Resettable closed-loop multi-turn magnetic sensor
US-2021033425-A1 · Feb 4, 2021 · US
Method and testing device for testing wiring of transformers
US-10859612-B2 · Dec 8, 2020 · US
Device and method for determining a parameter of a transformer
US-10794964-B2 · Oct 6, 2020 · US
Mobile transformer test device and method for testing a power transformer
US-10775449-B2 · Sep 15, 2020 · US
Polyphase inductive filter
US-2020217881-A1 · Jul 9, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01R29/20?
- CPC G01R29/20 is the Cooperative Patent Classification code for “Measuring number of turns; Measuring transformation ratio or coupling factor of windings.”
- How many patents are filed under CPC G01R29/20 (Measuring number of turns; Measuring transformation ratio or coupling factor of windings)?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC G01R29/20 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).