Variably choked pressure rate-of-rise mass flow verifier
US-2025327695-A1 · Oct 23, 2025 · US
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the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes
the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01F1/37 |
| Official title | the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes |
| Display label | the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2018 | 2 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flow Through Pressure Sensor
US-2025207963-A1 · Jun 26, 2025 · US
Flow through pressure sensor structured to remove dead volume
US-12181328-B2 · Dec 31, 2024 · US
Carrier for measurement and wafer transfer system including the same
US-11733077-B2 · Aug 22, 2023 · US
Mass flow meters/controllers and methods having improved accuracy
US-2023213369-A1 · Jul 6, 2023 · US
Coriolis effect-based mass flow meters/controllers using optical sensing and methods having improved accuracy
US-11624640-B2 · Apr 11, 2023 · US
Carrier for measurement and wafer transfer system including the same
US-2022307877-A1 · Sep 29, 2022 · US
Light irradiation device
US-11324842-B2 · May 10, 2022 · US
Welded differential pressure transducer assembly
US-2022107213-A1 · Apr 7, 2022 · US
Mass flow meters/controllers and methods having improved accuracy
US-2021396564-A1 · Dec 23, 2021 · US
Flow through pressure sensor
US-2021325223-A1 · Oct 21, 2021 · US
Light irradiation device
US-2021077641-A1 · Mar 18, 2021 · US
Air flow measuring device
US-2018058890-A1 · Mar 1, 2018 · US
Air flow measuring device
US-9857211-B2 · Jan 2, 2018 · US
Differential pressure based flow measurement device having improved pitot tube configuration
US-9250108-B2 · Feb 2, 2016 · US
Differential pressure based flow measurement device having improved pitot tube configuration
US-2015090050-A1 · Apr 2, 2015 · US
Air flow measuring device
US-2015020367-A1 · Jan 22, 2015 · US