Flocculant, filter, and waste liquid treating method
US-2019322555-A1 · Oct 24, 2019 · US
by extraction
by extraction · 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 | C02F1/26 |
| Official title | by extraction |
| Display label | by extraction |
| Total patents | 194 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 12 |
| 2017 | 13 |
| 2018 | 12 |
| 2019 | 21 |
| 2020 | 22 |
| 2021 | 17 |
| 2022 | 14 |
| 2023 | 17 |
| 2024 | 23 |
| 2025 | 20 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Lipophilic guanidinium compounds for removal of oxyanions from aqueous solutions
US-2019299124-A1 · Oct 3, 2019 · US
System and method of water purification utilizing an ionomer membrane
US-2019256384-A1 · Aug 22, 2019 · US
Hydrogel-based decontamination of aqueous samples containing nanoparticles
US-10343934-B2 · Jul 9, 2019 · US
Method for extracting polyhydroxyalkanoates (phas)
US-2019127727-A1 · May 2, 2019 · US
Portable efficient magnetic solid phase extraction device and extraction method thereof
US-10247642-B2 · Apr 2, 2019 · US
Solid-liquid separation device
US-10245527-B2 · Apr 2, 2019 · US
Bromide removal from aqueous solutions
US-10240242-B2 · Mar 26, 2019 · US
Treatment of produced water with seeded evaporator
US-10221670-B2 · Mar 5, 2019 · US
Water treatment method, and associated module and facility
US-2018370818-A1 · Dec 27, 2018 · US
Device for extraction of pollutants by multichannel tubular membrane
US-10137385-B2 · Nov 27, 2018 · US
Produced water treatment and solids precipitation from thermal treatment blowdown
US-10132145-B2 · Nov 20, 2018 · US
Method for reducing chemical oxygen demand of wastewater from preparation of 2-ethylhexanol
US-2018327290-A1 · Nov 15, 2018 · US
Emulsion extraction and processing from an oil/water separator
US-10112848-B2 · Oct 30, 2018 · US
Liquid cation exchanger
US-10071951-B2 · Sep 11, 2018 · US
Functionalized aldehydes as h2s and mercaptan scavengers
US-2018216013-A1 · Aug 2, 2018 · US
Separation of dichlorophenols
US-2018179132-A1 · Jun 28, 2018 · US
Branched-chain fatty acids as liquid cation exchangers
US-9919303-B2 · Mar 20, 2018 · US
Removal of HAB-produced toxins from bodies of water
US-9902625-B2 · Feb 27, 2018 · US
Solid-liquid separation device
US-2018028935-A1 · Feb 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/26?
- CPC C02F1/26 is the Cooperative Patent Classification code for “by extraction.”
- How many patents are filed under CPC C02F1/26 (by extraction)?
- Our database includes 194 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/26 growing?
- Publication counts under this code: 23 in 2024 vs 20 in 2025 (latest complete years).