Method for detecting a fault condition in an electrical machine
US-10088506-B2 · Oct 2, 2018 · US
Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
Arrangements for measuring frequencies; Arrangements for analysing frequency spectra · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01R23/00 |
| Official title | Arrangements for measuring frequencies; Arrangements for analysing frequency spectra |
| Display label | Arrangements for measuring frequencies; Arrangements for analysing frequency spectra |
| Total patents | 129 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 19 |
| 2017 | 16 |
| 2018 | 17 |
| 2019 | 16 |
| 2020 | 10 |
| 2021 | 4 |
| 2022 | 7 |
| 2023 | 2 |
| 2024 | 9 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for measuring the frequency of signals generated by high frequency medical devices
US-10073125-B2 · Sep 11, 2018 · US
Wide-area measurement system based control of grid-scale storage for power system stability enhancement
US-9964572-B2 · May 8, 2018 · US
Digital signal up-converting apparatus and related digital signal up-converting method
US-9917586-B2 · Mar 13, 2018 · US
Controlling a motor with two or more hall sensors
US-9915709-B2 · Mar 13, 2018 · US
Proximity Detection
US-2018031361-A1 · Feb 1, 2018 · US
Integrated RF MEMS on ATE loadboards for smart self RF matching
US-9806714-B2 · Oct 31, 2017 · US
Digital signal up-converting apparatus and related digital signal up-converting method
US-2017272074-A1 · Sep 21, 2017 · US
Frequency measurement device, frequency measurement method and under frequency load shedding device
US-2017254840-A1 · Sep 7, 2017 · US
Measuring system for over-the-air power measurements with active transmission
US-2017244499-A1 · Aug 24, 2017 · US
Measuring system for over-the-air power measurements
US-2017244503-A1 · Aug 24, 2017 · US
Motor drive circuit and method
US-9722516-B2 · Aug 1, 2017 · US
Transmit power measurement apparatus having programmable filter device that is set at least based on frequency response of transmit power detection path and related transmit power measurement method thereof
US-9712169-B2 · Jul 18, 2017 · US
Digital signal up-converting apparatus and related digital signal up-converting method
US-9698785-B2 · Jul 4, 2017 · US
Motor driving device
US-9692330-B2 · Jun 27, 2017 · US
Frequency Measurement for Electric Power Delivery Systems
US-2017146577-A1 · May 25, 2017 · US
Current pattern matching method for non-intrusive power load monitoring and disaggregation
US-9658261-B2 · May 23, 2017 · US
Proximity detection
US-9651355-B2 · May 16, 2017 · US
Method and system for calibrating and detecting offset of rotary encoder relative to rotor of motor
US-9641108-B2 · May 2, 2017 · US
Motor driving control apparatus
US-2017110994-A1 · Apr 20, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01R23/00?
- CPC G01R23/00 is the Cooperative Patent Classification code for “Arrangements for measuring frequencies; Arrangements for analysing frequency spectra.”
- How many patents are filed under CPC G01R23/00 (Arrangements for measuring frequencies; Arrangements for analysing frequency spectra)?
- Our database includes 129 publications tagged with this CPC code.
- Is patent activity under CPC G01R23/00 growing?
- Publication counts under this code: 9 in 2024 vs 8 in 2025 (latest complete years).