Saline wastewater treatment system using solar-assisted heat pump
US-2024083794-A1 · Mar 14, 2024 · US
by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)}
by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)} · 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 | C02F1/52 |
| Official title | by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)} |
| Display label | by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)} |
| Total patents | 658 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 56 |
| 2016 | 57 |
| 2017 | 78 |
| 2018 | 65 |
| 2019 | 71 |
| 2020 | 62 |
| 2021 | 60 |
| 2022 | 54 |
| 2023 | 42 |
| 2024 | 48 |
| 2025 | 51 |
| 2026 | 14 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems including an apparatus comprising both a humidification region and a dehumidification region
US-2016339356-A1 · Nov 24, 2016 · US
Air pollution control system, air pollution control method, spray drying device of dewatering filtration fluid from desulfurization discharged water, and method thereof
US-9409117-B2 · Aug 9, 2016 · US
Treatment of municipal wastewater with anaerobic digestion
US-2016023935-A1 · Jan 28, 2016 · US
Methods and systems for treating produced water
US-2015376033-A1 · Dec 31, 2015 · US
Selective scaling in desalination water treatment systems and associated methods
US-9221694-B1 · Dec 29, 2015 · US
Pervaporation membrane and method for concentrating phenols
US-2015367292-A1 · Dec 24, 2015 · US
Method for improving the percent recovery and water quality in high total hardness water
US-2015360988-A1 · Dec 17, 2015 · US
Water treatment method
US-2015344339-A1 · Dec 3, 2015 · US
Waste paint solidifier
US-2015343419-A1 · Dec 3, 2015 · US
Ultrapure water producting apparatus
US-2015336813-A1 · Nov 26, 2015 · US
pH control to enable homogeneous catalytic wet air oxidation
US-9193613-B2 · Nov 24, 2015 · US
Water production method
US-2015321934-A1 · Nov 12, 2015 · US
Treatment of municipal wastewater with anaerobic digestion
US-9181120-B2 · Nov 10, 2015 · US
Method for thickening or dehydrating sludge
US-2015315056-A1 · Nov 5, 2015 · US
Method for removing cesium ions in aqueous solution employing magnetic particles
US-2015315053-A1 · Nov 5, 2015 · US
System for treating coal gasification wastewater, and method for treating coal gasification wastewater
US-2015315054-A1 · Nov 5, 2015 · US
Achieving water release zone for dewatering thick fine tailings based on shearing parameter such as camp number
US-2015299005-A1 · Oct 22, 2015 · US
Treatment of produced water with seeded evaporator
US-2015292314-A1 · Oct 15, 2015 · US
Processes and treatment systems for treating high phosphorous containing fluids
US-2015274556-A1 · Oct 1, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/52?
- CPC C02F1/52 is the Cooperative Patent Classification code for “by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)}.”
- How many patents are filed under CPC C02F1/52 (by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)})?
- Our database includes 658 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/52 growing?
- Publication counts under this code: 48 in 2024 vs 51 in 2025 (latest complete years).