Modified Cyclodextrin/mesoporous Silica for Adsorbing Pb and Cd and Application Thereof
US-2021371302-A1 · Dec 2, 2021 · US
Heavy metal compounds
Heavy metal compounds · 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 | C02F1/62 |
| Official title | Heavy metal compounds |
| Display label | Heavy metal compounds |
| Total patents | 126 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 4 |
| 2017 | 5 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 12 |
| 2021 | 16 |
| 2022 | 14 |
| 2023 | 13 |
| 2024 | 18 |
| 2025 | 21 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spiral-wound filter module exhibiting almost no heavy metal leaching and manufacturing method thereof
US-2021322927-A1 · Oct 21, 2021 · US
Remediation method and system for deep-sea mine tailings
US-2021323841-A1 · Oct 21, 2021 · US
Particulate mineral materials functionalized with reducing agents for lowering the amount of heavy metal contaminants from an aqueous medium
US-2021246049-A1 · Aug 12, 2021 · US
Methods for removing anions from water
US-2021238067-A1 · Aug 5, 2021 · US
Polymer, metal removal composition, and method of removing metal ions
US-2021238415-A1 · Aug 5, 2021 · US
Method for Removing Heavy Metal Pollutants in Water with Divalent Manganese Strengthened Ferrate
US-2021230029-A1 · Jul 29, 2021 · US
Method for decontaminating heavy metals in an aqueous solution
US-2021221710-A1 · Jul 22, 2021 · US
Methods for removing anions from water
US-11066313-B1 · Jul 20, 2021 · US
Removal of lead from waste water using nanoscale mos2
US-2021178356-A1 · Jun 17, 2021 · US
Process for treating frac flowback and produced water including naturally occurring radioactive material
US-2021163327-A1 · Jun 3, 2021 · US
Processes For Reducing Environmental Availability of Environmental Pollutants
US-2021146335-A1 · May 20, 2021 · US
Porous nanocomposites
US-2021087076-A1 · Mar 25, 2021 · US
Method of treating wastewater
US-2021070637-A1 · Mar 11, 2021 · US
Metal removal agent and metal removal method for removing metal impurities in solution
US-2021060528-A1 · Mar 4, 2021 · US
Method for removing heavy metal from water body
US-2021017053-A1 · Jan 21, 2021 · US
Compound heavy metal chelating agent containing dithiocarboxylate functionalized ethoxylated pentaerythritol core hyperbranched polymer
US-2020377391-A1 · Dec 3, 2020 · US
Filtration aid and filtration treatment method
US-10850995-B2 · Dec 1, 2020 · US
Hollow fiber membrane modified with molybdenum trioxide nanoparticles
US-10843135-B2 · Nov 24, 2020 · US
Treatment of water
US-2020339443-A1 · Oct 29, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/62?
- CPC C02F1/62 is the Cooperative Patent Classification code for “Heavy metal compounds.”
- How many patents are filed under CPC C02F1/62 (Heavy metal compounds)?
- Our database includes 126 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/62 growing?
- Publication counts under this code: 18 in 2024 vs 21 in 2025 (latest complete years).