Method for ascertaining a viscosity of a fuel
US-2018328828-A1 · Nov 15, 2018 · US
through a restricted passage, e.g. tube, aperture
through a restricted passage, e.g. tube, aperture · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N11/04 |
| Official title | through a restricted passage, e.g. tube, aperture |
| Display label | through a restricted passage, e.g. tube, aperture |
| Total patents | 236 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 23 |
| 2017 | 22 |
| 2018 | 16 |
| 2019 | 17 |
| 2020 | 31 |
| 2021 | 22 |
| 2022 | 26 |
| 2023 | 28 |
| 2024 | 14 |
| 2025 | 20 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for measuring a flowing property in a resin transfer molding system
US-2018319107-A1 · Nov 8, 2018 · US
Apparatus for loss circulation material performance evaluation
US-2018266197-A1 · Sep 20, 2018 · US
Multiple Function Dual Core Flooding Apparatus and Methods
US-2018045704-A1 · Feb 15, 2018 · US
Viscosity measurement device
US-2017363452-A1 · Dec 21, 2017 · US
Method for Measuring Density of a Fluid
US-2017356833-A1 · Dec 14, 2017 · US
Measuring arrangement and method for measuring the density of flowable media
US-2017343457-A1 · Nov 30, 2017 · US
Analyzing drilling fluid rheology at a drilling site
US-2017336310-A1 · Nov 23, 2017 · US
Automated fluid monitoring
US-2017284918-A1 · Oct 5, 2017 · US
System and method for assessing rheological properties of grease
US-9778159-B2 · Oct 3, 2017 · US
Method and integrated device for analyzing liquid flow and liquid-solid interface interaction
US-9759643-B2 · Sep 12, 2017 · US
Method and apparatus for testing gel-based lost circulation materials
US-9739694-B2 · Aug 22, 2017 · US
Method for preparing coal for coke making
US-9708558-B2 · Jul 18, 2017 · US
Polymer Compositions Having Improved Processability and Methods of Making and Using Same
US-2017199110-A1 · Jul 13, 2017 · US
Method and device for ascertaining at least one variable regarding a state of a brake fluid in a brake system of a vehicle
US-9701298-B2 · Jul 11, 2017 · US
Maintaining a Measurement Gap in a Rheometer
US-2017184481-A1 · Jun 29, 2017 · US
Apparatus and method for blood analysis
US-9671388-B2 · Jun 6, 2017 · US
Coal mixture, method for manufacturing coal mixture, and method for manufacturing coke
US-2017137716-A1 · May 18, 2017 · US
Polymer compositions having improved processability and methods of making and using same
US-9645066-B1 · May 9, 2017 · US
Inline rheology/viscosity, density, and flow rate measurement
US-2017097293-A1 · Apr 6, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N11/04?
- CPC G01N11/04 is the Cooperative Patent Classification code for “through a restricted passage, e.g. tube, aperture.”
- How many patents are filed under CPC G01N11/04 (through a restricted passage, e.g. tube, aperture)?
- Our database includes 236 publications tagged with this CPC code.
- Is patent activity under CPC G01N11/04 growing?
- Publication counts under this code: 14 in 2024 vs 20 in 2025 (latest complete years).