Medicament Preparation and Treatment Devices, Methods, and Systems
US-2024277909-A1 · Aug 22, 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 | C02F2001/425 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 412 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 29 |
| 2016 | 27 |
| 2017 | 32 |
| 2018 | 39 |
| 2019 | 50 |
| 2020 | 46 |
| 2021 | 44 |
| 2022 | 32 |
| 2023 | 35 |
| 2024 | 36 |
| 2025 | 31 |
| 2026 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Brine purification process
US-2017313600-A1 · Nov 2, 2017 · US
Particulate medium prepared from partially decomposed organic matter for selective sorption between competing metal ions in aqueous solutions
US-2017165659-A1 · Jun 15, 2017 · US
Particulate sorption medium prepared from partially decomposed organic matter
US-9561489-B2 · Feb 7, 2017 · US
Acid regeneration of ion exchange resins for industrial applications
US-2016375434-A1 · Dec 29, 2016 · US
Acid regeneration of ion exchange resins for industrial applications
US-2016362308-A1 · Dec 15, 2016 · US
Media cartridge with linear, adjustable bypass
US-2016353920-A1 · Dec 8, 2016 · US
In situ cleaning system
US-2016326460-A1 · Nov 10, 2016 · US
Inorganic cellular monobloc cation-exchange materials, the preparation method thereof, and separation method using same
US-2016318012-A1 · Nov 3, 2016 · US
Water softening device and method for regenerating ion exchange resin
US-2016311700-A1 · Oct 27, 2016 · US
Filtration System For Preparation Of Fluids For Medical Applications
US-2016303305-A1 · Oct 20, 2016 · US
Acid regeneration of ion exchange resins for industrial applications
US-9463455-B2 · Oct 11, 2016 · US
Water recovery method and system
US-2016264443-A1 · Sep 15, 2016 · US
In situ cleaning system
US-9421586-B2 · Aug 23, 2016 · US
Ion exchange membrane and filter module using same
US-2016228823-A1 · Aug 11, 2016 · US
Elimination of sodium sulfate from biologically treated wastewater
US-2016221851-A1 · Aug 4, 2016 · US
Water softening compositions, and related systems and methods
US-2016207036-A1 · Jul 21, 2016 · US
Organic-Pollution-Resistant Ion Exchange Resin and Preparation Method and Application Thereof
US-2016207796-A1 · Jul 21, 2016 · US
Method for producing monodisperse, amido-methylated vinyl-aromatic bead polymers
US-2016200887-A1 · Jul 14, 2016 · US
Acid regeneration of ion exchange resins for industrial applications
US-9387471-B2 · Jul 12, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2001/425?
- CPC C02F2001/425 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C02F2001/425 (Chemistry & Metallurgy)?
- Our database includes 412 publications tagged with this CPC code.
- Is patent activity under CPC C02F2001/425 growing?
- Publication counts under this code: 36 in 2024 vs 31 in 2025 (latest complete years).