Improvement relating to fluid flow measurement
US-2024094036-A1 · Mar 21, 2024 · US
Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01F25/00 |
| Official title | Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume |
| Display label | Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume |
| Total patents | 165 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 23 |
| 2017 | 22 |
| 2018 | 17 |
| 2019 | 13 |
| 2020 | 19 |
| 2021 | 13 |
| 2022 | 13 |
| 2023 | 8 |
| 2024 | 10 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Wind sensor motion compensation systems and methods
US-9821892-B2 · Nov 21, 2017 · US
Ultrasonic flow meter system and method for measuring flow rate
US-2017314979-A1 · Nov 2, 2017 · US
Multi-channel guided wave radar level gauge
US-9778089-B2 · Oct 3, 2017 · US
Mass flow controller with onboard diagnostics, prognostics, and data logging
US-9766635-B2 · Sep 19, 2017 · US
Method to provide a quality measure for meter verification results
US-2017248461-A1 · Aug 31, 2017 · US
Method for operating a coriolis mass flowmeter
US-2017241823-A1 · Aug 24, 2017 · US
Thermal Air Flow- Rate Sensor
US-2017234710-A1 · Aug 17, 2017 · US
Method for calibrating a multiple flow conduit flow meter
US-9719838-B2 · Aug 1, 2017 · US
System and method for identifying and recovering from a temporary sensor failure
US-2017191862-A1 · Jul 6, 2017 · US
Rack airflow monitoring system and method
US-2017188486-A1 · Jun 29, 2017 · US
Health monitor for turbine flow meter
US-9651590-B2 · May 16, 2017 · US
Calibration method and flow rate measurement method for flow rate controller for gas supply device
US-9638560-B2 · May 2, 2017 · US
Measuring device and measuring arrangement
US-2017074708-A1 · Mar 16, 2017 · US
Method and apparatus for testing liquid flowmeter
US-2017052056-A1 · Feb 23, 2017 · US
Flying object, detecting device, control device, and air current detecting method
US-2017052055-A1 · Feb 23, 2017 · US
Standard signal generator
US-2017023396-A1 · Jan 26, 2017 · US
Fill level measuring device
US-9523598-B2 · Dec 20, 2016 · US
Apparatus and method for volume and mass estimation of a multiphase fluid stored at cryogenic temperatures
US-9513155-B2 · Dec 6, 2016 · US
Method for processing data
US-9489780-B2 · Nov 8, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01F25/00?
- CPC G01F25/00 is the Cooperative Patent Classification code for “Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume.”
- How many patents are filed under CPC G01F25/00 (Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume)?
- Our database includes 165 publications tagged with this CPC code.
- Is patent activity under CPC G01F25/00 growing?
- Publication counts under this code: 10 in 2024 vs 5 in 2025 (latest complete years).