Flocculation basin inclusion or exclusion type water treatment apparatus using dissolved air flotation
US-10518274-B2 · Dec 31, 2019 · US
Installations for water purification using chemical agents
Installations for water purification using chemical agents · 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 | C02F1/5281 |
| Official title | {Installations for water purification using chemical agents} |
| Display label | Installations for water purification using chemical agents |
| Total patents | 156 |
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 | 12 |
| 2016 | 12 |
| 2017 | 18 |
| 2018 | 14 |
| 2019 | 15 |
| 2020 | 16 |
| 2021 | 22 |
| 2022 | 13 |
| 2023 | 15 |
| 2024 | 6 |
| 2025 | 8 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and Method for Treatment of Wastewater via Enhanced Electroflotation
US-2019308890-A1 · Oct 10, 2019 · US
Wastewater treatment method and wastewater treatment apparatus
US-10336631-B2 · Jul 2, 2019 · US
Capacitive-deionization-type nutritive salt removal system and method for use in dam or weir
US-2019062182-A1 · Feb 28, 2019 · US
Water treatment process and water treatment system
US-10160671-B2 · Dec 25, 2018 · US
Primary treatment of wastewater with switching from reagent-free operation to operation with reagent
US-2018319688-A1 · Nov 8, 2018 · US
Multibubble injection type dissolved air flotation water treatment apparatus
US-10093554-B2 · Oct 9, 2018 · US
Water treatment process and water treatment system
US-10029929-B2 · Jul 24, 2018 · US
Water softening treatment using in-situ ballasted flocculation system
US-2018194656-A1 · Jul 12, 2018 · US
Water treatment process and water treatment system
US-9969629-B2 · May 15, 2018 · US
Flocculation basin inclusion or exclusion type water treatment apparatus using dissolved air flotation
US-2018126391-A1 · May 10, 2018 · US
Method for treating water containing organic matter using ion exchange and ballasted flocculation
US-9957182-B2 · May 1, 2018 · US
Water treatment process and water treatment system
US-9950936-B2 · Apr 24, 2018 · US
Methods and compositions for clarifying produced waters for boiler feed waters
US-2018105442-A1 · Apr 19, 2018 · US
Rapid stirring machine
US-2018104661-A1 · Apr 19, 2018 · US
Water treatment process and water treatment system
US-9914652-B2 · Mar 13, 2018 · US
Water treatment process and water treatment system
US-9914653-B2 · Mar 13, 2018 · US
Column thickener and a process thereof for dewatering of iron ore slurry
US-2018037481-A1 · Feb 8, 2018 · US
Wastewater Filtration System
US-2017369342-A1 · Dec 28, 2017 · US
Flocculation basin inclusion or exclusion type water treatment apparatus using dissolved air flotation
US-9839918-B2 · Dec 12, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/5281?
- CPC C02F1/5281 is the Cooperative Patent Classification code for “Installations for water purification using chemical agents.”
- How many patents are filed under CPC C02F1/5281 (Installations for water purification using chemical agents)?
- Our database includes 156 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/5281 growing?
- Publication counts under this code: 6 in 2024 vs 8 in 2025 (latest complete years).