Trihalosilane refining device having divided wall distillation column
US-9849402-B2 · Dec 26, 2017 · US
where at least one distillation column contains at least one dividing wall
where at least one distillation column contains at least one dividing wall · 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 | B01D3/141 |
| Official title | {where at least one distillation column contains at least one dividing wall} |
| Display label | where at least one distillation column contains at least one dividing wall |
| Total patents | 289 |
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 | 24 |
| 2016 | 27 |
| 2017 | 27 |
| 2018 | 38 |
| 2019 | 38 |
| 2020 | 43 |
| 2021 | 25 |
| 2022 | 18 |
| 2023 | 15 |
| 2024 | 20 |
| 2025 | 10 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Jet and diesel selective hydrocracking
US-2017335207-A1 · Nov 23, 2017 · US
Methods and apparatuses for phenol fractionation in a single dividing wall column
US-9815756-B2 · Nov 14, 2017 · US
Purification of chlorosilanes by means of distillation and adsorption
US-2017296942-A1 · Oct 19, 2017 · US
Combined xylene isomerization and transalkylation process unit
US-9776936-B2 · Oct 3, 2017 · US
Divided wall columns
US-2017239589-A1 · Aug 24, 2017 · US
Distillation device
US-2017225100-A1 · Aug 10, 2017 · US
Extraction column and process for extracting a constituent from a fluid
US-9643910-B2 · May 9, 2017 · US
Apparatus and method for purifying cumene
US-2017044081-A1 · Feb 16, 2017 · US
Processes and apparatuses for separating streams to provide a transalkylation feed stream in an aromatics complex
US-9527007-B2 · Dec 27, 2016 · US
Dividing wall in ethanol production process
US-2016368845-A1 · Dec 22, 2016 · US
Process and apparatus for the production of para-xylene
US-9517980-B2 · Dec 13, 2016 · US
Split-shell fractionation columns and associated processes for separating aromatic hydrocarbons
US-9517982-B2 · Dec 13, 2016 · US
Dividing wall distillation columns for production of high-purity 2-ethylhexanol and fractionation method using same
US-9511306-B2 · Dec 6, 2016 · US
Processes and apparatuses for separating streams to provide a transalkylation feed stream in an aromatics complex
US-2016346711-A1 · Dec 1, 2016 · US
Processes and apparatuses for separating streams to provide a transalkylation feed stream in an aromatics complex
US-2016347689-A1 · Dec 1, 2016 · US
Multicomponent dividing wall columns
US-9504934-B2 · Nov 29, 2016 · US
Process and Apparatus for the Production of Para-xylene
US-2016318827-A1 · Nov 3, 2016 · US
Process for the production of xylenes
US-9469579-B2 · Oct 18, 2016 · US
Process for the Production of Xylenes
US-2016264495-A1 · Sep 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D3/141?
- CPC B01D3/141 is the Cooperative Patent Classification code for “where at least one distillation column contains at least one dividing wall.”
- How many patents are filed under CPC B01D3/141 (where at least one distillation column contains at least one dividing wall)?
- Our database includes 289 publications tagged with this CPC code.
- Is patent activity under CPC B01D3/141 growing?
- Publication counts under this code: 20 in 2024 vs 10 in 2025 (latest complete years).