Process and plant for treatment of wastewater stream from acrylic acid and/or acrylate production plant
US-2025368557-A1 · Dec 4, 2025 · US
by steam distillation
by steam distillation · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C51/445 |
| Official title | {by steam distillation} |
| Display label | by steam distillation |
| Total patents | 44 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 11 |
| 2019 | 8 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparation of high purity (meth)acrylic acid
US-2025019337-A1 · Jan 16, 2025 · US
Method for preparation of high purity (meth)acrylic acid
US-2025002439-A1 · Jan 2, 2025 · US
Method for producing acetic acid
US-12060322-B2 · Aug 13, 2024 · US
Process for acetic acid production by removing permanganate reducing compounds
US-2023202956-A1 · Jun 29, 2023 · US
Method for producing acetic acid
US-11485698-B2 · Nov 1, 2022 · US
Process for pre-heating boiler feed water in the manufacture of purified aromatic carboxylic acids
US-2021380519-A1 · Dec 9, 2021 · US
Method for producing acetic acid
US-2021355063-A1 · Nov 18, 2021 · US
Method for producing acetic acid
US-2021122694-A1 · Apr 29, 2021 · US
Method for producing acetic acid
US-10759730-B2 · Sep 1, 2020 · US
Method for producing acetic acid
US-10752572-B2 · Aug 25, 2020 · US
Method for producing acetic acid
US-2020140366-A1 · May 7, 2020 · US
Method for producing acetic acid
US-2020123093-A1 · Apr 23, 2020 · US
Method and apparatus for carbonylating methanol with acetic acid enriched flash stream
US-10519089-B2 · Dec 31, 2019 · US
Method for producing acetic acid
US-10457622-B2 · Oct 29, 2019 · US
Method for producing acetic acid
US-10428005-B2 · Oct 1, 2019 · US
Method for producing acetic acid
US-10428004-B2 · Oct 1, 2019 · US
Method for producing acetic acid
US-10428003-B2 · Oct 1, 2019 · US
Process for purification of methyl methacrylate
US-10392337-B2 · Aug 27, 2019 · US
Method and apparatus for carbonylating methanol with acetic acid enriched flash stream
US-2019062249-A1 · Feb 28, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C51/445?
- CPC C07C51/445 is the Cooperative Patent Classification code for “by steam distillation.”
- How many patents are filed under CPC C07C51/445 (by steam distillation)?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC C07C51/445 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).