Velocity measurement of drilled cuttings on a shaker
US-2019368287-A1 · Dec 5, 2019 · US
by measuring Doppler frequency shift
by measuring Doppler frequency shift · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01F1/663 |
| Official title | by measuring Doppler frequency shift |
| Display label | by measuring Doppler frequency shift |
| Total patents | 200 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 14 |
| 2017 | 14 |
| 2018 | 20 |
| 2019 | 25 |
| 2020 | 20 |
| 2021 | 22 |
| 2022 | 29 |
| 2023 | 17 |
| 2024 | 13 |
| 2025 | 12 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flow measuring instrument comprising a wind velocity sensor
US-10495500-B2 · Dec 3, 2019 · US
Estimating flow velocity by harmonic excitation of injected microbubbles
US-2019154482-A1 · May 23, 2019 · US
Flow meter with adaptable beam characteristics
US-10295385-B2 · May 21, 2019 · US
Flow meter configuration and calibration
US-2018335330-A1 · Nov 22, 2018 · US
Measuring arrangement having a rail and linkage assembly for mounting an ultrasonic flow measuring device in a pipe in tilted position
US-10113890-B2 · Oct 30, 2018 · US
Flow data acquisition and telemetry processing system
US-10088347-B2 · Oct 2, 2018 · US
Methods for measuring properties of multiphase oil-water-gas mixtures
US-10088590-B2 · Oct 2, 2018 · US
Real-time bottom-hole flow measurements for hydraulic fracturing with a doppler sensor in bridge plug using das communication
US-2018274360-A1 · Sep 27, 2018 · US
Flow data acquisition and telemetry processing system
US-2018238725-A1 · Aug 23, 2018 · US
Mobile insect release system
US-2018206465-A1 · Jul 26, 2018 · US
Determining a level and flow speed of a medium
US-10001558-B2 · Jun 19, 2018 · US
Field device with compensation circuit for eliminating environmental influences
US-2018149506-A1 · May 31, 2018 · US
Method for evaluating a frequency spectrum
US-2018106650-A1 · Apr 19, 2018 · US
Determining a distance and a flow speed of a medium
US-9945709-B2 · Apr 17, 2018 · US
Downhole tool for determining flow velocity using measurements from a transducer and a plurality of electrodes
US-9915143-B2 · Mar 13, 2018 · US
Ultrasound fuel flow sensing and control
US-9891085-B2 · Feb 13, 2018 · US
Ultrasound color flow imaging for oil field applications
US-2018024264-A1 · Jan 25, 2018 · US
Method and system for determining a velocity of a relative movement between an object and a fluidal medium
US-9874580-B2 · Jan 23, 2018 · US
Methods and apparatus for ultrasonic fluid flow measurement and fluid flow data analysis
US-9874466-B2 · Jan 23, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01F1/663?
- CPC G01F1/663 is the Cooperative Patent Classification code for “by measuring Doppler frequency shift.”
- How many patents are filed under CPC G01F1/663 (by measuring Doppler frequency shift)?
- Our database includes 200 publications tagged with this CPC code.
- Is patent activity under CPC G01F1/663 growing?
- Publication counts under this code: 13 in 2024 vs 12 in 2025 (latest complete years).