Process for preparing acrylic acid
US-12441676-B2 · Oct 14, 2025 · US
by gas-liquid treatment, e.g. by gas-liquid absorption
by gas-liquid treatment, e.g. by gas-liquid absorption · 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 | C07C45/783 |
| Official title | {by gas-liquid treatment, e.g. by gas-liquid absorption} |
| Display label | by gas-liquid treatment, e.g. by gas-liquid absorption |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 4 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing fluorenone
US-2025129005-A1 · Apr 24, 2025 · US
Antibacterial compound isolated from Psiloxylon mauritianum and its derivatives
US-12178790-B2 · Dec 31, 2024 · US
Method for producing isopropyl alcohol
US-2024262768-A1 · Aug 8, 2024 · US
Method for producing propylene
US-2024092709-A1 · Mar 21, 2024 · US
Process for separating heavy by-products and catalyst ligan from a vapour stream comprising aldehyde
US-2024051908-A1 · Feb 15, 2024 · US
Process for hydroformylation with removal of dissolved hydrogen
US-2024043363-A1 · Feb 8, 2024 · US
Process for preparing acrylic acid
US-2023271914-A1 · Aug 31, 2023 · US
Process for producing acrylic acid
US-2023174451-A1 · Jun 8, 2023 · US
Systems and methods for purifying solvents
US-11440866-B2 · Sep 13, 2022 · US
A process for the continuous production of either acrolein or acrylic acid as the target product from propene
US-2022259131-A1 · Aug 18, 2022 · US
Systems and Methods for Purifying Solvents
US-2021387937-A1 · Dec 16, 2021 · US
Method for the purification of natural vanillin
US-10941100-B2 · Mar 9, 2021 · US
Method for the purification of natural vanillin
US-2019389792-A1 · Dec 26, 2019 · US
Hydroformylation process
US-10407372-B2 · Sep 10, 2019 · US
Hydroformylation process
US-2019023637-A1 · Jan 24, 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
Column for thermal treatment of a fluid
US-9958201-B2 · May 1, 2018 · US
Process for production of acrylic acid
US-9776940-B2 · Oct 3, 2017 · US
Process for preparing acrylic acid from methanol and acetic acid
US-9593065-B2 · Mar 14, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C45/783?
- CPC C07C45/783 is the Cooperative Patent Classification code for “by gas-liquid treatment, e.g. by gas-liquid absorption.”
- How many patents are filed under CPC C07C45/783 (by gas-liquid treatment, e.g. by gas-liquid absorption)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC C07C45/783 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).