Saline wastewater treatment system using solar-assisted heat pump
US-2024083794-A1 · Mar 14, 2024 · US
using large scale industrial sized filters
using large scale industrial sized filters · 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 | C02F1/004 |
| Official title | {using large scale industrial sized filters} |
| Display label | using large scale industrial sized filters |
| Total patents | 615 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 41 |
| 2017 | 44 |
| 2018 | 43 |
| 2019 | 57 |
| 2020 | 66 |
| 2021 | 67 |
| 2022 | 76 |
| 2023 | 62 |
| 2024 | 65 |
| 2025 | 55 |
| 2026 | 20 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stormwater biofiltration system and method
US-11927007-B2 · Mar 12, 2024 · US
Seawater pretreatment device
US-2016368796-A1 · Dec 22, 2016 · US
Ballast water treatment device
US-2016368581-A1 · Dec 22, 2016 · US
Composition and method for treating water systems
US-9506016-B2 · Nov 29, 2016 · US
Water treatment process and plant using ballasted flocculation and settling
US-9505638-B2 · Nov 29, 2016 · US
Water treatment apparatus and water treatment method using the same
US-2016340209-A1 · Nov 24, 2016 · US
Ballast water treatment device
US-2016340014-A1 · Nov 24, 2016 · US
Water treatment apparatus and water treatment method using the same
US-2016339361-A1 · Nov 24, 2016 · US
Method and apparatus for filtration of samples for online analyzers
US-2016327459-A1 · Nov 10, 2016 · US
Media filter having nonpowered mixing and coagulation basin, and seawater desalination plant and dissolved air floatation apparatus using same
US-2016326029-A1 · Nov 10, 2016 · US
Hydrostatic storage of produced water
US-2016319652-A1 · Nov 3, 2016 · US
Submergible Biocide Reactor and Method
US-2016311708-A1 · Oct 27, 2016 · US
Ballast water treatment device
US-9475566-B2 · Oct 25, 2016 · US
Partial bed backwashing for packed bed reactor
US-2016297698-A1 · Oct 13, 2016 · US
Charging device of circulating water utilization system and circulating-water utilization system
US-2016292795-A1 · Oct 6, 2016 · US
Systems and methods for separating mine tailings from water-absorbing polymers and regenerating the separated water-absorbing polymers
US-9457295-B2 · Oct 4, 2016 · US
Filter device
US-2016279544-A1 · Sep 29, 2016 · US
Pleated filter, ballast water treatment apparatus, and ballast water treatment method using the same
US-2016271532-A1 · Sep 22, 2016 · US
Multi-step system for treating selenium-containing wastewater
US-2016264439-A1 · Sep 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/004?
- CPC C02F1/004 is the Cooperative Patent Classification code for “using large scale industrial sized filters.”
- How many patents are filed under CPC C02F1/004 (using large scale industrial sized filters)?
- Our database includes 615 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/004 growing?
- Publication counts under this code: 65 in 2024 vs 55 in 2025 (latest complete years).