Straight-line sewage treatment system for enhanced treatment of low c/n domestic sewage
US-2024092664-A1 · Mar 21, 2024 · US
Detergents, surfactants
Detergents, surfactants · 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 | C02F2101/301 |
| Official title | {Detergents, surfactants} |
| Display label | Detergents, surfactants |
| Total patents | 133 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 8 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 17 |
| 2021 | 16 |
| 2022 | 13 |
| 2023 | 18 |
| 2024 | 21 |
| 2025 | 14 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid treatment apparatus
US-2021387872-A1 · Dec 16, 2021 · US
Devices and methods for removing perfluorinated compounds from contaminated water
US-2021370241-A1 · Dec 2, 2021 · US
Titania-carbon dot-reduced graphene oxide composites, their make, and use
US-11161094-B2 · Nov 2, 2021 · US
Electrode apparatus for removing contaminants from a fluid
US-2021323848-A1 · Oct 21, 2021 · US
Mobile system and method for pfas effluent treatment
US-2021322951-A1 · Oct 21, 2021 · US
Application of cyclodextrins (CDS) for remediation of perfluoroalkyl substances (PFASS)
US-11149135-B2 · Oct 19, 2021 · US
Recycling method of amphiphilic surface-active pollutants in water
US-11104589-B2 · Aug 31, 2021 · US
System and method for treating effluent
US-2021230031-A1 · Jul 29, 2021 · US
Treatment of oil and grease in water using algae
US-11066316-B2 · Jul 20, 2021 · US
Compositions and methods for removal of per- and polyfluoroalkyl substances (pfas)
US-2021206670-A1 · Jul 8, 2021 · US
Plasma-based methods and systems for treating waters with high electrical conductivity and/or low surface tension
US-11027990-B2 · Jun 8, 2021 · US
Water treatment process
US-2021130211-A1 · May 6, 2021 · US
Method and system for purifying contaminated water
US-2021039009-A1 · Feb 11, 2021 · US
Advanced oxidation water treatment system and method
US-2021024388-A1 · Jan 28, 2021 · US
Electrochemical devices or systems comprising redox-functionalized electrodes and uses thereof
US-2020399146-A1 · Dec 24, 2020 · US
Superoleophobic membranes for oil/water separation
US-10843139-B2 · Nov 24, 2020 · US
Method for treating by flotation an aqueous solution from a petroleum production
US-2020361788-A1 · Nov 19, 2020 · US
Titania-carbon dot-reduced graphene oxide composites, their make, and use
US-2020346187-A1 · Nov 5, 2020 · US
Systems and methods for shielded inductive devices
US-2020317555-A1 · Oct 8, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2101/301?
- CPC C02F2101/301 is the Cooperative Patent Classification code for “Detergents, surfactants.”
- How many patents are filed under CPC C02F2101/301 (Detergents, surfactants)?
- Our database includes 133 publications tagged with this CPC code.
- Is patent activity under CPC C02F2101/301 growing?
- Publication counts under this code: 21 in 2024 vs 14 in 2025 (latest complete years).