Fault detection system and method for liquid level sensing device
US-2020355543-A1 · Nov 12, 2020 · US
for sensing changes in level only at discrete points
for sensing changes in level only at discrete points · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01F23/74 |
| Official title | for sensing changes in level only at discrete points |
| Display label | for sensing changes in level only at discrete points |
| Total patents | 103 |
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 | 11 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 14 |
| 2019 | 8 |
| 2020 | 17 |
| 2021 | 14 |
| 2022 | 12 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filling level sensing device
US-2020331449-A1 · Oct 22, 2020 · US
Fluid volume determination enhanced by assessment of vehicle operative state
US-2020326221-A1 · Oct 15, 2020 · US
Fluid container having a device for fill level monitoring
US-2020292372-A1 · Sep 17, 2020 · US
Full charge notification device of urea water tank for vehicle
US-2020271506-A1 · Aug 27, 2020 · US
Liquid-surface detection device
US-10753782-B2 · Aug 25, 2020 · US
Unit for detecting the filling level of a liquid in a container, braking system, and method
US-2020264032-A1 · Aug 20, 2020 · US
Liquid level sensor and methods therefor
US-2020217707-A1 · Jul 9, 2020 · US
Method and system for monitoring a state
US-10684158-B2 · Jun 16, 2020 · US
Fluid sensor assembly
US-2020182833-A1 · Jun 11, 2020 · US
Estimating consumption of washer fluid
US-2020139941-A1 · May 7, 2020 · US
Fuel filter
US-10641220-B2 · May 5, 2020 · US
Liquid level detection device
US-10634546-B2 · Apr 28, 2020 · US
Liquid level sensor mounting systems and methods
US-2020088442-A1 · Mar 19, 2020 · US
Fault detection system and method for liquid level sensing device
US-2020056926-A1 · Feb 20, 2020 · US
Wireless system and method for measuring an operative condition of a machine
US-2020041480-A1 · Feb 6, 2020 · US
Multi-probe sender and tank having the same
US-10527481-B2 · Jan 7, 2020 · US
Wireless system and method for measuring an operative condition of a machine
US-10488385-B2 · Nov 26, 2019 · US
Multi-channel fluid level sensor
US-10436626-B2 · Oct 8, 2019 · US
Control apparatus for detecting a variation of a fluid level in a tank
US-10352751-B2 · Jul 16, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01F23/74?
- CPC G01F23/74 is the Cooperative Patent Classification code for “for sensing changes in level only at discrete points.”
- How many patents are filed under CPC G01F23/74 (for sensing changes in level only at discrete points)?
- Our database includes 103 publications tagged with this CPC code.
- Is patent activity under CPC G01F23/74 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).