Process for purifying organic solvents
US-12521709-B2 · Jan 13, 2026 · US
by solid-liquid treatment; by chemisorption
by solid-liquid treatment; by chemisorption · 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 | C07C41/36 |
| Official title | by solid-liquid treatment; by chemisorption |
| Display label | by solid-liquid treatment; by chemisorption |
| Total patents | 50 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 8 |
| 2020 | 7 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Separation method
US-12466786-B2 · Nov 11, 2025 · US
Process for purifying organic solvents
US-2025186988-A1 · Jun 12, 2025 · US
Polyimide-containing filtration membrane, filters, and methods
US-2025153114-A1 · May 15, 2025 · US
Systems and methods for drying compounds
US-12239952-B2 · Mar 4, 2025 · US
Processes for purifying glycol ethers
US-2024150272-A1 · May 9, 2024 · US
Methoxypropanols separation combining membrane separation and distillation
US-2023406798-A1 · Dec 21, 2023 · US
Purification process for hydrophilic organic solvent
US-11759774-B2 · Sep 19, 2023 · US
Separation method
US-2023250052-A1 · Aug 10, 2023 · US
Method of pretreating ion-exchange resin for removal of aldehyde impurities
US-11708315-B2 · Jul 25, 2023 · US
Purification of aromatic liquids
US-2023173454-A1 · Jun 8, 2023 · US
Method of pretreating ion-exchange resin for removal of aldehyde impurities
US-2023106288-A1 · Apr 6, 2023 · US
Cavitand compositions and methods of use thereof
US-11492356-B2 · Nov 8, 2022 · US
Systems and methods for drying compounds
US-2022226800-A1 · Jul 21, 2022 · US
Method for producing an organic solvent
US-2022096978-A1 · Mar 31, 2022 · US
Method for producing divinyl ether compound having alkylene skeleton
US-2022033334-A1 · Feb 3, 2022 · US
Purification of 1,4-bis (4-phenoxybenzoyl)benzene by centrifugal filtration
US-2021155571-A1 · May 27, 2021 · US
Ion exchange resins, purification methods and methods of making ionic resins
US-10821433-B2 · Nov 3, 2020 · US
Intermolecular reaction of propargyl ethers with dimethylfuran in the presence of gold(I) complexes
US-10815178-B2 · Oct 27, 2020 · US
Methods of purifying industrial gas streams
US-2020298172-A1 · Sep 24, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C41/36?
- CPC C07C41/36 is the Cooperative Patent Classification code for “by solid-liquid treatment; by chemisorption.”
- How many patents are filed under CPC C07C41/36 (by solid-liquid treatment; by chemisorption)?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC C07C41/36 growing?
- Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).