Catalysts
US-2024100509-A1 · Mar 28, 2024 · US
Reduction by metals
Reduction by metals · 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 | C02F1/705 |
| Official title | {Reduction by metals} |
| Display label | Reduction by metals |
| Total patents | 181 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 6 |
| 2017 | 12 |
| 2018 | 11 |
| 2019 | 14 |
| 2020 | 25 |
| 2021 | 24 |
| 2022 | 31 |
| 2023 | 19 |
| 2024 | 13 |
| 2025 | 9 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Deionized-water cooling for electrical equipment
US-2020392026-A1 · Dec 17, 2020 · US
Modification of iron-based media for water treatment
US-10676376-B2 · Jun 9, 2020 · US
Mixed aluminum (iii) and iron (ii) salt solution for enhancing the hybrid zero-valent iron media system reactivity for treating metal-contaminated wastewater
US-2020010343-A1 · Jan 9, 2020 · US
Ecological method for denitrification and phosphorus removal in wastewater treatment process
US-10494271-B2 · Dec 3, 2019 · US
Selenium removal using aluminum salt at conditioning and reaction stages to activate zero-valent iron (zvi) in pironox process
US-2019352203-A1 · Nov 21, 2019 · US
Ballast Water Management System
US-2019345045-A1 · Nov 14, 2019 · US
Catalyst for hydrogen peroxide decomposition, process for producing the same, and method for decomposing hydrogen peroxide using the catalyst
US-10441943-B2 · Oct 15, 2019 · US
Waste liquid treatment device and waste liquid treatment method
US-10407326-B2 · Sep 10, 2019 · US
Selenium removal using aluminum salt at conditioning and reaction stages to activate zero-valent iron (ZVI) in pironox process
US-10377648-B2 · Aug 13, 2019 · US
Water purification system
US-2019194039-A1 · Jun 27, 2019 · US
Zero valent iron systems and methods for treatment of contaminated wastewater
US-10329179-B2 · Jun 25, 2019 · US
Concentration of wastewater to reduce flow rate, cost, and footprint of treatment system
US-2019135672-A1 · May 9, 2019 · US
Treatment of high peroxide waste streams
US-2019127247-A1 · May 2, 2019 · US
Rhamnolipid coated nanoscale zerovalent iron emulsions and method of use thereof
US-2019118017-A1 · Apr 25, 2019 · US
Activated Carbon Supported Ni0Fe0 Nanoparticles for Reductive Transformation of Perfluoroalkyl-Containing Compounds
US-2019060691-A1 · Feb 28, 2019 · US
Filtering medium for fluid purification
US-10173196-B2 · Jan 8, 2019 · US
Method for nitrogen removal from aqueous medium
US-10167215-B2 · Jan 1, 2019 · US
Devices, systems, and methods for heterogeneous catalytic quenching of hydrogen peroxide in a water source
US-2018354832-A1 · Dec 13, 2018 · US
Concentrating of wastewater to reduce flow rate, cost, and footprint of treatment system
US-10125040-B2 · Nov 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/705?
- CPC C02F1/705 is the Cooperative Patent Classification code for “Reduction by metals.”
- How many patents are filed under CPC C02F1/705 (Reduction by metals)?
- Our database includes 181 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/705 growing?
- Publication counts under this code: 13 in 2024 vs 9 in 2025 (latest complete years).