Coupled medium-low temperature flue gas processing apparatus for fly ash washing
US-2024390959-A1 · Nov 28, 2024 · US
by passing the gas or air or vapour over or through a liquid bath
by passing the gas or air or vapour over or through a liquid bath · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01D47/02 |
| Official title | by passing the gas or air or vapour over or through a liquid bath |
| Display label | by passing the gas or air or vapour over or through a liquid bath |
| Total patents | 71 |
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 | 2 |
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 8 |
| 2019 | 2 |
| 2020 | 9 |
| 2021 | 8 |
| 2022 | 15 |
| 2023 | 6 |
| 2024 | 10 |
| 2025 | 3 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Foreign substance collecting apparatus and electrical steel sheet manufacturing facility including same
US-12138709-B2 · Nov 12, 2024 · US
Air pollution control unit and air pollution control method, and CO2 recovery unit and CO2 recovery method
US-12109529-B2 · Oct 8, 2024 · US
Humidifier and/or flow generator for CPAP device
US-12048815-B2 · Jul 30, 2024 · US
Portable breathing air filtering device and method
US-2024058738-A1 · Feb 22, 2024 · US
Gas hydrate-based particulate/waste gas simultaneous removal system and method
US-11819794-B2 · Nov 21, 2023 · US
Fluid treatment apparatus
US-2023347280-A1 · Nov 2, 2023 · US
Humidifier and/or flow generator for cpap device
US-2023338693-A1 · Oct 26, 2023 · US
Device and method for separating glue particles from an aerosol
US-2023311040-A1 · Oct 5, 2023 · US
Humidifier and/or flow generator for CPAP device
US-11724059-B2 · Aug 15, 2023 · US
Abatement apparatus for exhaust gas
US-2023201765-A1 · Jun 29, 2023 · US
Process gas suction structure and exhaust gas treatment apparatus
US-11511226-B2 · Nov 29, 2022 · US
Humidifier and/or flow generator for cpap device
US-2022370754-A1 · Nov 24, 2022 · US
Drying a coating using electromagnetic radiation or heating of drum
US-11492300-B2 · Nov 8, 2022 · US
Device for removing biomaterial
US-2022347625-A1 · Nov 3, 2022 · US
Capture device for purifying air, purification device and air purifier
US-11439934-B2 · Sep 13, 2022 · US
Apparatus for separation and conveying of clumped particles, such as carbon fibers
US-2022274138-A1 · Sep 1, 2022 · US
Humidifier and/or flow generator for CPAP device
US-11420006-B2 · Aug 23, 2022 · US
Oil-gas treatment system, oil-gas treatment method and mechanical apparatus
US-2022250000-A1 · Aug 11, 2022 · US
Process gas suction structure and exhaust gas treatment apparatus
US-2022193605-A1 · Jun 23, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D47/02?
- CPC B01D47/02 is the Cooperative Patent Classification code for “by passing the gas or air or vapour over or through a liquid bath.”
- How many patents are filed under CPC B01D47/02 (by passing the gas or air or vapour over or through a liquid bath)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC B01D47/02 growing?
- Publication counts under this code: 10 in 2024 vs 3 in 2025 (latest complete years).