Providing a frequency of an electrical quantity in an electrical power system
US-2023314492-A1 · Oct 5, 2023 · US
with provision for recording frequency spectrum
with provision for recording frequency spectrum · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01R23/18 |
| Official title | with provision for recording frequency spectrum |
| Display label | with provision for recording frequency spectrum |
| Total patents | 89 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 8 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 13 |
| 2021 | 8 |
| 2022 | 4 |
| 2023 | 8 |
| 2024 | 13 |
| 2025 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Test and measurement instrument having spectrogram with cursor time correlation
US-2023221353-A1 · Jul 13, 2023 · US
Automatic determination of spectrum and spectrogram attributes in a test and measurement instrument
US-2023221352-A1 · Jul 13, 2023 · US
System for Broken-Rotor Bar Detection in Inverter-Fed Induction Motors Using Graph-Based Motor Current Signature Analysis
US-2023080835-A1 · Mar 16, 2023 · US
Peak selection assistance for rf spectrum analysis
US-2022244293-A1 · Aug 4, 2022 · US
Method to perform spectral biopsy of electrophysiological brain function
US-2022218264-A1 · Jul 14, 2022 · US
Apparatus and method for phase tracking an oscillatory signal
US-2022183612-A1 · Jun 16, 2022 · US
Method for correcting a time-dependent measurement signal of a motor transmission unit as well as a method for detecting wear and/or damage of the same by means of this correction method
US-2022187165-A1 · Jun 16, 2022 · US
Method and device for estimating an angle of arrival of an incident radio signal
US-11181605-B2 · Nov 23, 2021 · US
Multi-energy-spectrum X-ray imaging system and method of substance identification of item to be inspected by using the same
US-11112528-B2 · Sep 7, 2021 · US
Anomaly detection apparatus, method and computer-readable medium
US-2021247427-A1 · Aug 12, 2021 · US
System for testing Nakagami fading channel and verification method thereof
US-11079419-B2 · Aug 3, 2021 · US
Method and system for detecting and/or classifying a wanted signal
US-2021150286-A1 · May 20, 2021 · US
Harmonic detection system
US-10951059-B2 · Mar 16, 2021 · US
Measuring device and measuring method with time calculation
US-10935586-B2 · Mar 2, 2021 · US
Method and system for detecting useful signals, with respective non-negligible frequency drift, in a total signal
US-10921355-B2 · Feb 16, 2021 · US
Differential signal measurement system and method
US-10877092-B2 · Dec 29, 2020 · US
Detection of acoustic echo cancellation
US-10841431-B2 · Nov 17, 2020 · US
Detection of Acoustic Echo Cancellation
US-2020336602-A1 · Oct 22, 2020 · US
Apparatus and method for processing spectrum
US-10794942-B2 · Oct 6, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01R23/18?
- CPC G01R23/18 is the Cooperative Patent Classification code for “with provision for recording frequency spectrum.”
- How many patents are filed under CPC G01R23/18 (with provision for recording frequency spectrum)?
- Our database includes 89 publications tagged with this CPC code.
- Is patent activity under CPC G01R23/18 growing?
- Publication counts under this code: 13 in 2024 vs 12 in 2025 (latest complete years).