Detection of a clogged filter in an aspirating detection system
US-2021348987-A1 · Nov 11, 2021 · US
by measuring pressure or differential pressure, created by the use of flow constriction
by measuring pressure or differential pressure, created by the use of flow constriction · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01F5/005 |
| Official title | {by measuring pressure or differential pressure, created by the use of flow constriction} |
| Display label | by measuring pressure or differential pressure, created by the use of flow constriction |
| Total patents | 91 |
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 | 4 |
| 2016 | 9 |
| 2017 | 2 |
| 2018 | 11 |
| 2019 | 7 |
| 2020 | 13 |
| 2021 | 17 |
| 2022 | 9 |
| 2023 | 12 |
| 2024 | 3 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flow through pressure sensor
US-2021325223-A1 · Oct 21, 2021 · US
Flow rate regulator
US-2021325913-A1 · Oct 21, 2021 · US
Pressure regulating devices and related systems and methods
US-11054295-B2 · Jul 6, 2021 · US
Water meters having integrated pressure regulating systems and related methods
US-11035713-B2 · Jun 15, 2021 · US
Volumetric flow sensor for tubular conduits and method
US-2021172774-A1 · Jun 10, 2021 · US
Apparatus and method for inspecting ventilation
US-2021148777-A1 · May 20, 2021 · US
Automated algorithm and real-time system to detect MPFM preventive maintenance activities
US-10983513-B1 · Apr 20, 2021 · US
Sensor element for detecting at least one property of a fluid medium
US-2021108950-A1 · Apr 15, 2021 · US
Improved Flow Measurement
US-2021096010-A1 · Apr 1, 2021 · US
Multiphase flow metering system for horizontal well compartments
US-2021055146-A1 · Feb 25, 2021 · US
Pressure regulated flow controller
US-10921827-B1 · Feb 16, 2021 · US
Physical quantity measurement device
US-10907762-B2 · Feb 2, 2021 · US
Pressure regulated flow controller
US-2021026380-A1 · Jan 28, 2021 · US
Calibration apparatus and sensitivity determining module for virtual flow meter and associated methods
US-10852177-B2 · Dec 1, 2020 · US
Method of manufacturing physical quantity sensor device and physical quantity sensor device
US-10852318-B2 · Dec 1, 2020 · US
Method and measuring apparatus for determining compressibility of a flowing fluid
US-10830681-B2 · Nov 10, 2020 · US
Apparatus and method for creating inferential process flow measurements using other process measurements
US-10823598-B2 · Nov 3, 2020 · US
Air flow meter
US-10816380-B2 · Oct 27, 2020 · US
Method for calibrating plurality of chamber pressure sensors and substrate processing system
US-2020292403-A1 · Sep 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01F5/005?
- CPC G01F5/005 is the Cooperative Patent Classification code for “by measuring pressure or differential pressure, created by the use of flow constriction.”
- How many patents are filed under CPC G01F5/005 (by measuring pressure or differential pressure, created by the use of flow constriction)?
- Our database includes 91 publications tagged with this CPC code.
- Is patent activity under CPC G01F5/005 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).