Adsorption filter
US-2017341052-A1 · Nov 30, 2017 · US
Removal of treatment agents after treatment
Removal of treatment agents after treatment · 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 | C02F2303/18 |
| Official title | Removal of treatment agents after treatment |
| Display label | Removal of treatment agents after treatment |
| Total patents | 279 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 20 |
| 2017 | 20 |
| 2018 | 22 |
| 2019 | 27 |
| 2020 | 29 |
| 2021 | 31 |
| 2022 | 23 |
| 2023 | 34 |
| 2024 | 28 |
| 2025 | 21 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for a treatment of water by adsorption on active carbon and clarification, and corresponding plant
US-2017297940-A1 · Oct 19, 2017 · US
Method for Relieving Corrosive Environment of Boiling Water Reactor, Nuclear Power Plant, and Method for Injecting Noble Metal Which Is Carried out in Nuclear Power Plant
US-2017287573-A1 · Oct 5, 2017 · US
Foam intercept system
US-9771279-B2 · Sep 26, 2017 · US
Method and apparatus for producing pure water
US-2017253499-A1 · Sep 7, 2017 · US
System and method to control h2o2 level in advanced oxidation processes
US-2017247273-A1 · Aug 31, 2017 · US
Method for sludge ozonation in a wastewater treatment system
US-9738549-B2 · Aug 22, 2017 · US
Use of Magnetic Mesoporous Silica Nanoparticles For Removing Uranium From Media
US-2017225967-A1 · Aug 10, 2017 · US
Copper nanoparticles for degradation of pollutants
US-2017173573-A1 · Jun 22, 2017 · US
Catalytic systems and methods for process stream treatment
US-2017174583-A1 · Jun 22, 2017 · US
Method for water treatment by adsorption and filtration on a granular material bed
US-2017129785-A1 · May 11, 2017 · US
Filtration apparatus, and immersion-type filtration method using same
US-2017128889-A1 · May 11, 2017 · US
Method for treating water by using salt desorption process of gas hydrate
US-9643866-B2 · May 9, 2017 · US
Wastewater purification with nanoparticle-treated bed
US-2017106347-A1 · Apr 20, 2017 · US
Process for decomposition of organic synthetic-dyes using semiconductor-oxides nanotubes via dark-catalysis
US-9604859-B2 · Mar 28, 2017 · US
Removal of kinetic hydrate inhibitors
US-2017080356-A1 · Mar 23, 2017 · US
Treatment of produced water
US-2017073255-A1 · Mar 16, 2017 · US
Thermo-responsive draw solute for forward osmosis and method for water desalination and purification using the same
US-9550728-B2 · Jan 24, 2017 · US
Wastewater purification with nanoparticle-treated bed
US-9540251-B2 · Jan 10, 2017 · US
System and method for detecting time-bomb malware
US-9536091-B2 · Jan 3, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2303/18?
- CPC C02F2303/18 is the Cooperative Patent Classification code for “Removal of treatment agents after treatment.”
- How many patents are filed under CPC C02F2303/18 (Removal of treatment agents after treatment)?
- Our database includes 279 publications tagged with this CPC code.
- Is patent activity under CPC C02F2303/18 growing?
- Publication counts under this code: 28 in 2024 vs 21 in 2025 (latest complete years).