Method for purification of a solvent for separation of styrene by extractive distillation and for separation of styrene
US-2020354292-A1 · Nov 12, 2020 · US
in combination with at least one evaporator
in combination with at least one evaporator · 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 | B01D3/148 |
| Official title | {in combination with at least one evaporator} |
| Display label | in combination with at least one evaporator |
| Total patents | 161 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 11 |
| 2017 | 3 |
| 2018 | 15 |
| 2019 | 21 |
| 2020 | 20 |
| 2021 | 21 |
| 2022 | 17 |
| 2023 | 18 |
| 2024 | 17 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and systems for producing 1,3-butadiene
US-10723676-B2 · Jul 28, 2020 · US
Process for producing acetic acid
US-10661196-B2 · May 26, 2020 · US
Process for isolating pure butyl acrylate from crude butyl acrylate by distillation, where butyl is n-butyl or isobutyl
US-2020095185-A1 · Mar 26, 2020 · US
Process for producing acetic acid
US-10562836-B2 · Feb 18, 2020 · US
Method for the purification of natural vanillin
US-2019389792-A1 · Dec 26, 2019 · US
Method and apparatus for producing acetic acid
US-2019367439-A1 · Dec 5, 2019 · US
Method for recovering transition metal tetrahalide and hydrocarbons from a waste stream
US-2019351346-A1 · Nov 21, 2019 · US
Process for separation of propylene from a liquefied petroleum gas stream
US-10472306-B1 · Nov 12, 2019 · US
Process for the distillation of an aldehyde mixture
US-10435346-B2 · Oct 8, 2019 · US
Supersonic separation of hydrocarbons
US-10436506-B2 · Oct 8, 2019 · US
Method and apparatus for producing acetic acid
US-10428006-B2 · Oct 1, 2019 · US
Process for purifying polycarbonate polyols and purifying apparatus therefor
US-10421836-B2 · Sep 24, 2019 · US
Component Removal from a Gas Stream
US-2019257580-A1 · Aug 22, 2019 · US
Fluidized upgrading/hydrostabilizing of pyrolysis vapors
US-10377953-B2 · Aug 13, 2019 · US
Method for recovering transition metal tetrahalide and hydrocarbons from a waste stream
US-10369491-B2 · Aug 6, 2019 · US
System and method for desalinization of water using solar thermal energy
US-2019225508-A1 · Jul 25, 2019 · US
Process for producing isocyanate and at least one further chemical product in an integrated production
US-2019185419-A1 · Jun 20, 2019 · US
Processes and systems for the recycle of process water in the production of ethylene glycol
US-2019169154-A1 · Jun 6, 2019 · US
Production of tert-butyl esters of ethylenically unsaturated carboxylic acids
US-10301252-B2 · May 28, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D3/148?
- CPC B01D3/148 is the Cooperative Patent Classification code for “in combination with at least one evaporator.”
- How many patents are filed under CPC B01D3/148 (in combination with at least one evaporator)?
- Our database includes 161 publications tagged with this CPC code.
- Is patent activity under CPC B01D3/148 growing?
- Publication counts under this code: 17 in 2024 vs 10 in 2025 (latest complete years).