Reactive monomer separation device
US-2026084075-A1 · Mar 26, 2026 · US
Dual-flow sieve trays
Dual-flow sieve trays · 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 | B01D3/225 |
| Official title | {Dual-flow sieve trays} |
| Display label | Dual-flow sieve trays |
| Total patents | 38 |
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 | 9 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 8 |
| 2020 | 2 |
| 2021 | 6 |
| 2023 | 1 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reactive monomer separation device
US-2026084076-A1 · Mar 26, 2026 · US
Liquid-liquid extraction column with variable inter-tray space
US-2025058248-A1 · Feb 20, 2025 · US
Variable perforation liquid-liquid extraction column
US-2025058249-A1 · Feb 20, 2025 · US
Systems including a condensing apparatus such as a bubble column condenser
US-2023415068-A1 · Dec 28, 2023 · US
Multiple downcomer trays
US-11148069-B2 · Oct 19, 2021 · US
Multiple downcomer trays
US-2021170300-A1 · Jun 10, 2021 · US
Distributor tray for a fractionating column, comprising a compartment for distributing gas
US-2021146273-A1 · May 20, 2021 · US
Multiple pass, parallel flow downcomer tray for a mass transfer column
US-10989471-B2 · Apr 27, 2021 · US
Process for conversion of plastics into fuel
US-10968394-B2 · Apr 6, 2021 · US
Process for isolating pure 2-ethylhexyl acrylate or pure 2-propylheptyl acrylate from the corresponding crude alkyl acrylate by distillation
US-10894223-B2 · Jan 19, 2021 · US
Process for isolating pure tert-butyl (meth)acrylate from crude tert-butyl (meth)acrylate by distillation
US-10730823-B2 · Aug 4, 2020 · US
Process for isolating pure 2-ethylhexyl acrylate or pure 2-propylheptyl acrylate from the corresponding crude alkyl acrylate by distillation
US-2020094160-A1 · Mar 26, 2020 · US
Column for thermal treatment of fluid mixtures
US-10493376-B2 · Dec 3, 2019 · US
Process for isolating pure tert-butyl (meth)acrylate from crude tert-butyl (meth)acrylate by distillation
US-2019330137-A1 · Oct 31, 2019 · US
Method for liquid-vapor contacting in a mass transfer column using multiple pass, parallel flow downcomer trays
US-10458703-B2 · Oct 29, 2019 · US
Fluid contact tray particularly for the use in an offshore fractionation column
US-10434438-B2 · Oct 8, 2019 · US
Systems including a condensing apparatus such as a bubble column condenser
US-2019282921-A1 · Sep 19, 2019 · US
Process for conversion of plastics into fuel
US-2019177620-A1 · Jun 13, 2019 · US
Systems including a condensing apparatus such as a bubble column condenser
US-10286335-B2 · May 14, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D3/225?
- CPC B01D3/225 is the Cooperative Patent Classification code for “Dual-flow sieve trays.”
- How many patents are filed under CPC B01D3/225 (Dual-flow sieve trays)?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC B01D3/225 growing?
- Publication counts under this code: 1 in 2023 vs 2 in 2025 (latest complete years).