Multiple downcomer trays
US-11148069-B2 · Oct 19, 2021 · US
Bubble caps; Risers for vapour; Discharge pipes for liquid
Bubble caps; Risers for vapour; Discharge pipes for liquid · 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 | B01D3/20 |
| Official title | Bubble caps; Risers for vapour; Discharge pipes for liquid |
| Display label | Bubble caps; Risers for vapour; Discharge pipes for liquid |
| Total patents | 85 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 11 |
| 2017 | 11 |
| 2018 | 15 |
| 2019 | 11 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 9 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas redirecting device for liquid-gas contacting column
US-10821396-B2 · Nov 3, 2020 · US
Distributor tray with compartments and gas risers of the same shape for an offshore gas/liquid contact column
US-2020338470-A1 · Oct 29, 2020 · US
Device for separating a two-phase fluid integrated into a gas/liquid separation column
US-2020330898-A1 · Oct 22, 2020 · US
Removable fixing device
US-2020309237-A1 · Oct 1, 2020 · US
Exchange column distributor tray comprising a dispersive material within a chimney for gas passage
US-10786752-B2 · Sep 29, 2020 · US
Distributor tray for gas/liquid exchange column with liquid deflector
US-10722851-B2 · Jul 28, 2020 · US
Packed column
US-10569190-B2 · Feb 25, 2020 · US
Column for thermal treatment of fluid mixtures
US-10493376-B2 · Dec 3, 2019 · US
Chimney tray for a column for thermal treatment of fluid mixtures
US-10471369-B2 · Nov 12, 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
Apparatus for gas-liquid contacting
US-2019299117-A1 · Oct 3, 2019 · US
Pump reservoir, rectification system and process for low-temperature rectification
US-2019277564-A1 · Sep 12, 2019 · US
Tray for exchange column comprising gas chimneys surmounted by hats with a streamlined profile
US-2019184331-A1 · Jun 20, 2019 · US
Fluid collection device, material exchange column and method for producing a fluid collection device of this type
US-2019143242-A1 · May 16, 2019 · US
Process and apparatus for the preparation of alkylene glycol
US-10279280-B2 · May 7, 2019 · US
Crossflow tray for a mass transfer column, mass transfer column and use of the mass transfer column
US-10183234-B2 · Jan 22, 2019 · US
System for fluid redistribution
US-10179299-B2 · Jan 15, 2019 · US
Column for heat and/or mass exchange between two fluids comprising a collection tray and fluid separation means
US-2018318727-A1 · Nov 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D3/20?
- CPC B01D3/20 is the Cooperative Patent Classification code for “Bubble caps; Risers for vapour; Discharge pipes for liquid.”
- How many patents are filed under CPC B01D3/20 (Bubble caps; Risers for vapour; Discharge pipes for liquid)?
- Our database includes 85 publications tagged with this CPC code.
- Is patent activity under CPC B01D3/20 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).