Magnetic aluminum-based adsorbent and preparation method therefor
US-2024342688-A1 · Oct 17, 2024 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C02F1/281 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 1,277 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 89 |
| 2016 | 91 |
| 2017 | 85 |
| 2018 | 97 |
| 2019 | 110 |
| 2020 | 130 |
| 2021 | 127 |
| 2022 | 124 |
| 2023 | 106 |
| 2024 | 137 |
| 2025 | 152 |
| 2026 | 29 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Water Treatment Unit Comprising a Plurality of Filtration Devices
US-2024308884-A1 · Sep 19, 2024 · US
Method of making nanocomposite from date palm tree and saudi bentonite
US-2024261760-A1 · Aug 8, 2024 · US
Method for preparing silicotitanate and cs adsorbent
US-2015343436-A1 · Dec 3, 2015 · US
Water filter assembly
US-2015344321-A1 · Dec 3, 2015 · US
Iron coordination polymers for adsorption of arsenate and phosphate
US-9199863-B2 · Dec 1, 2015 · US
Water treatment system
US-2015336829-A1 · Nov 26, 2015 · US
Polysulfide intercalated layered double hydroxides for metal capture applications
US-2015336050-A1 · Nov 26, 2015 · US
Removal of heavy metals from aqueous solutions using vanadium-doped titanium dioxide nanoparticles
US-9193608-B2 · Nov 24, 2015 · US
Carbon Bodies and Ferromagnetic Carbon Bodies
US-2015328621-A1 · Nov 19, 2015 · US
Nanostructure material supporting arsenic ion adsorption compound and method to remove arsenic ion using the same
US-9187343-B2 · Nov 17, 2015 · US
Method of treating treatment object containing harmful compound
US-9187353-B2 · Nov 17, 2015 · US
Method for removing drugs from waste water using neutralized bauxite residue
US-9187342-B2 · Nov 17, 2015 · US
Method of oxidising production water
US-2015321935-A1 · Nov 12, 2015 · US
Process for removing hydrocarbons from a body of water by means of selective permeation, and relative apparatus
US-2015321925-A1 · Nov 12, 2015 · US
Method for removing cesium ions in aqueous solution employing magnetic particles
US-2015315053-A1 · Nov 5, 2015 · US
Synthesis method for magnetite and birnessite aggregate-form mixture
US-9174196-B2 · Nov 3, 2015 · US
Chitosan-functionalized cordierite monoliths as heavy metal sorbents
US-2015306567-A1 · Oct 29, 2015 · US
Nanoparticulate Apatite Coated Calcite/Limestone Filter Materials for Removing Contaminants from Contaminated Water
US-2015306595-A1 · Oct 29, 2015 · US
Radioactive material adsorbent, adsorption vessel, adsorption tower, and water treatment device
US-2015306594-A1 · Oct 29, 2015 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/281?
- CPC C02F1/281 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C02F1/281 (Chemistry & Metallurgy)?
- Our database includes 1,277 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/281 growing?
- Publication counts under this code: 137 in 2024 vs 152 in 2025 (latest complete years).