Forward osmosis filtration cell, and methods of filtering water with a forward osmosis filtration cell
US-12594526-B2 · Apr 7, 2026 · US
using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields
using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields · 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 | C02F1/487 |
| Official title | {using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields} |
| Display label | using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Plasma activated water production with membrane concentration
US-12528723-B2 · Jan 20, 2026 · US
Water plasma activation of demineralized water
US-2025368551-A1 · Dec 4, 2025 · US
Magnetization control apparatus for preventing clogging of drip irrigation system irrigator and control method thereof
US-12398049-B2 · Aug 26, 2025 · US
Plasma activated water production with membrane concentration
US-2025214872-A1 · Jul 3, 2025 · US
Plasma activated water production with membrane concentration
US-12291470-B2 · May 6, 2025 · US
Methods and systems for removing contaminants and nutrients from a fluid
US-2025051195-A1 · Feb 13, 2025 · US
Systems and methods for disinfecting fluids
US-12145870-B2 · Nov 19, 2024 · US
Dielectric barrier discharge for ballast water treatment using optimized voltage shape control
US-12134569-B2 · Nov 5, 2024 · US
Microfluidic systems for pulsed electric field sterilization
US-2024140836-A1 · May 2, 2024 · US
Disinfection of water using pulsed electric fields
US-2024092661-A1 · Mar 21, 2024 · US
Treating saline water and other solvents with magnetic and electric fields
US-11904327-B2 · Feb 20, 2024 · US
Forward osmosis filtration cell, and methods of filtering water with a forward osmosis filtration cell
US-2023233994-A1 · Jul 27, 2023 · US
Magnetization control apparatus for preventing clogging of drip irrigation system irrigator and control method thereof
US-2023202867-A1 · Jun 29, 2023 · US
Systems and methods for enhancing the efficiency of separation processes
US-2023099118-A1 · Mar 30, 2023 · US
Plasma generator, cleaning liquid processing apparatus, semiconductor device cleaning apparatus, cleaning liquid processing method, and method of manufacturing semiconductor device
US-11545372-B2 · Jan 3, 2023 · US
Plasma activated water production with membrane concentration
US-2022332606-A1 · Oct 20, 2022 · US
Gliding Arc And Dielectric Barrier Discharge Combined Discharge Plasma Disinfection Device And Method
US-2022265879-A1 · Aug 25, 2022 · US
Dielectric Barrier Discharge For Ballast Water Treatment Using Optimized Voltage Shape Control
US-2022119275-A1 · Apr 21, 2022 · US
Purification apparatus with electrodeless bulb and methods of operation
US-11299405-B2 · Apr 12, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/487?
- CPC C02F1/487 is the Cooperative Patent Classification code for “using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields.”
- How many patents are filed under CPC C02F1/487 (using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/487 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).