Process for purification of methyl methacrylate
US-2018346402-A1 · Dec 6, 2018 · US
Azeotropic distillation
Azeotropic distillation · 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 | B01D3/36 |
| Official title | Azeotropic distillation |
| Display label | Azeotropic distillation |
| Total patents | 196 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 7 |
| 2017 | 13 |
| 2018 | 24 |
| 2019 | 38 |
| 2020 | 27 |
| 2021 | 11 |
| 2022 | 19 |
| 2023 | 9 |
| 2024 | 18 |
| 2025 | 13 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Breaking a methanol/methyl methacrylate azeotrope using pressure swing distillation
US-10144698-B2 · Dec 4, 2018 · US
Azeotropic compositions of hydrogen fluoride and z-3,3,3-trifluoro-1-chloropropene
US-2018297919-A1 · Oct 18, 2018 · US
Method for separating N,N,N'-trimethylbisaminoethylether and/or N,N-dimethylbisaminoethylether from a mixture
US-10100002-B2 · Oct 16, 2018 · US
Method for producing hydrogen chloride
US-2018208465-A1 · Jul 26, 2018 · US
Azeotropic or azeotrope-like compositions of 3,3,3-trifluoropropyne and water
US-10029964-B2 · Jul 24, 2018 · US
Azeotropic compositions of hydrogen fluoride and Z-3,3,3-trifluoro-1-chloropropene
US-10029961-B2 · Jul 24, 2018 · US
Systems and methods for separating (e)-1-chloro-3,3,3-trifluoropropene, hf, and a heavy organic and reactor purge
US-2018194703-A1 · Jul 12, 2018 · US
Combined dehydration of gas and inhibition of liquid from a well stream
US-2018187112-A1 · Jul 5, 2018 · US
Process for producing diisopropyl ether from high purity propylene
US-2018179135-A1 · Jun 28, 2018 · US
Process for producing diisopropyl ether from high purity propylene
US-2018179134-A1 · Jun 28, 2018 · US
Process for producing diisopropyl ether from high purity propylene
US-2018179133-A1 · Jun 28, 2018 · US
Distallation device (amended)
US-2018169542-A1 · Jun 21, 2018 · US
Process for the manufacture of idalopirdine via hydrogenation of an imine
US-9975850-B2 · May 22, 2018 · US
Separating carbon dioxide and ethane from a mixed stream
US-9964352-B2 · May 8, 2018 · US
Method for producing fluorinated alkane, method for separating and recovering amidine base, and method for using recovered amidine base
US-2018118642-A1 · May 3, 2018 · US
Process and system for making cyclohexanone
US-9938219-B2 · Apr 10, 2018 · US
Process and system for making cyclohexanone
US-9938218-B2 · Apr 10, 2018 · US
Process to control hi concentration in residuum stream
US-2018093198-A1 · Apr 5, 2018 · US
Thermally integrated distillation systems and processes using the same
US-2018065061-A1 · Mar 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D3/36?
- CPC B01D3/36 is the Cooperative Patent Classification code for “Azeotropic distillation.”
- How many patents are filed under CPC B01D3/36 (Azeotropic distillation)?
- Our database includes 196 publications tagged with this CPC code.
- Is patent activity under CPC B01D3/36 growing?
- Publication counts under this code: 18 in 2024 vs 13 in 2025 (latest complete years).