Material for neutralising and/or hardening liquids, a method for producing same, and uses
US-2024293793-A1 · Sep 5, 2024 · US
Iron or iron compound
Iron or iron compound · 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 | C02F2101/203 |
| Official title | {Iron or iron compound} |
| Display label | Iron or iron compound |
| Total patents | 322 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 17 |
| 2017 | 20 |
| 2018 | 33 |
| 2019 | 25 |
| 2020 | 23 |
| 2021 | 33 |
| 2022 | 25 |
| 2023 | 37 |
| 2024 | 38 |
| 2025 | 43 |
| 2026 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composites for removing heavy metal and method of synthesizing the same
US-2018236435-A1 · Aug 23, 2018 · US
Engineered yeast as a method for bioremediation
US-2018237321-A1 · Aug 23, 2018 · US
Technique for removal of organics and dissolved solids from aqueous medias via supercritical treatment
US-9950939-B2 · Apr 24, 2018 · US
Magnetic separator and release tool therefor
US-9931647-B2 · Apr 3, 2018 · US
Water-Purifying Agent and Water Purification Method
US-2018079665-A1 · Mar 22, 2018 · US
Hybrid activated iron-biological water treatment system and method
US-2017362108-A1 · Dec 21, 2017 · US
Water treatment using a cryptocrystalline magnesite - bentonite clay composite
US-2017341959-A1 · Nov 30, 2017 · US
Water production method
US-2017266618-A1 · Sep 21, 2017 · US
Fitment
US-D796633-S · Sep 5, 2017 · US
Hydrophobically modified polyamine scale inhibitors
US-9745216-B2 · Aug 29, 2017 · US
Process for purification of diphenyl carbonate for the manufacturing of high quality polycarbonate
US-9732028-B2 · Aug 15, 2017 · US
Methods for removing contaminants from aqueous systems
US-9725341-B2 · Aug 8, 2017 · US
Pipe fitment
US-D794165-S · Aug 8, 2017 · US
Sulfonated aminomethylated chelate resins
US-2017216833-A1 · Aug 3, 2017 · US
Filter assembly
US-D793522-S · Aug 1, 2017 · US
Filter
US-D792942-S · Jul 25, 2017 · US
Sea water reverse osmosis system to reduce concentrate volume prior to disposal
US-2017203979-A1 · Jul 20, 2017 · US
Particulate Sorption Medium Prepared From Partially Decomposed Organic Matter
US-2017157592-A1 · Jun 8, 2017 · US
Separator device
US-2017152977-A1 · Jun 1, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2101/203?
- CPC C02F2101/203 is the Cooperative Patent Classification code for “Iron or iron compound.”
- How many patents are filed under CPC C02F2101/203 (Iron or iron compound)?
- Our database includes 322 publications tagged with this CPC code.
- Is patent activity under CPC C02F2101/203 growing?
- Publication counts under this code: 38 in 2024 vs 43 in 2025 (latest complete years).