Exhaust gas analyzing device, gas supply method, and exhaust gas sampling device
US-12553873-B2 · Feb 17, 2026 · US
separating gas from solid, e.g. filter
separating gas from solid, e.g. filter · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N2001/227 |
| Official title | {separating gas from solid, e.g. filter} |
| Display label | separating gas from solid, e.g. filter |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 8 |
| 2023 | 14 |
| 2024 | 7 |
| 2025 | 7 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gasification tar monitoring system, gasification tar monitoring method and gasification tar monitoring device
US-12535421-B2 · Jan 27, 2026 · US
Diluter, analysis system, and analysis method
US-12523581-B2 · Jan 13, 2026 · US
Gas measuring device and gas measuring system
US-12492967-B2 · Dec 9, 2025 · US
Portable biosensor for air sample
US-12449308-B2 · Oct 21, 2025 · US
Liquid impinger sampling systems and methods
US-12399089-B2 · Aug 26, 2025 · US
Analyzing gases from inclusions in minerals
US-2025231155-A1 · Jul 17, 2025 · US
Apparatuses, systems, and methods for sample capture and extraction
US-12352670-B2 · Jul 8, 2025 · US
Elemental analysis device for analyzing test sample having cleaning gas supply mechanism
US-12253443-B2 · Mar 18, 2025 · US
Gas analysis device, gas analysis method, and program for gas analysis device
US-2025035544-A1 · Jan 30, 2025 · US
Gasification tar monitoring system, gasification tar monitoring method and gasification tar monitoring device
US-2024319100-A1 · Sep 26, 2024 · US
On-line measurement for emitted aerosol precursors from industrial sources
US-12055555-B2 · Aug 6, 2024 · US
Automatic gas sample handling and preparation for surface data logging applications
US-11952892-B2 · Apr 9, 2024 · US
System and method for detecting concentration of free SiO2 in coal dust
US-11940376-B2 · Mar 26, 2024 · US
Apparatuses, systems, and methods for sample capture and extraction
US-2024068914-A1 · Feb 29, 2024 · US
Method for controlling furnace, and analyzing device for carrying out this method
US-11885565-B2 · Jan 30, 2024 · US
Mold detecting device using electromagnetic waves
US-11867603-B2 · Jan 9, 2024 · US
Apparatuses, systems, and methods for sample capture and extraction
US-11852567-B2 · Dec 26, 2023 · US
Apparatuses, systems, and methods for sample capture and extraction
US-11852568-B2 · Dec 26, 2023 · US
Apparatuses, systems, and methods for sample capture and extraction
US-11846574-B2 · Dec 19, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N2001/227?
- CPC G01N2001/227 is the Cooperative Patent Classification code for “separating gas from solid, e.g. filter.”
- How many patents are filed under CPC G01N2001/227 (separating gas from solid, e.g. filter)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC G01N2001/227 growing?
- Publication counts under this code: 7 in 2024 vs 7 in 2025 (latest complete years).