Saline wastewater treatment system using solar-assisted heat pump
US-2024083794-A1 · Mar 14, 2024 · US
Biological treatment of water, waste water, or sewage {(C02F1/006 takes precedence)}
Biological treatment of water, waste water, or sewage {(C02F1/006 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 | C02F3/00 |
| Official title | Biological treatment of water, waste water, or sewage {(C02F1/006 takes precedence)} |
| Display label | Biological treatment of water, waste water, or sewage {(C02F1/006 takes precedence)} |
| Total patents | 129 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 12 |
| 2017 | 15 |
| 2018 | 8 |
| 2019 | 20 |
| 2020 | 8 |
| 2021 | 6 |
| 2022 | 17 |
| 2023 | 12 |
| 2024 | 7 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for treating effluents from the production of an aromatic compound derived from a dihydroxylated benzene
US-10501354-B2 · Dec 10, 2019 · US
Ecological method for denitrification and phosphorus removal in wastewater treatment process
US-10494271-B2 · Dec 3, 2019 · US
Apparatus and method for treatment of wet organic matter to produce biogas
US-2019359921-A1 · Nov 28, 2019 · US
Use of activated carbon in a membrane bioreactor
US-10486992-B2 · Nov 26, 2019 · US
Granule-forming method and waste water treatment method
US-10479710-B2 · Nov 19, 2019 · US
Hybrid reactor and process for removing selenium
US-10370274-B2 · Aug 6, 2019 · US
Consortium of micro-organisms and its use to reduce chemical oxygen demand of spent metal working fluid
US-2019152819-A1 · May 23, 2019 · US
Non-dissolved redox mediator biofilm carrier and its preparation method
US-2019144316-A1 · May 16, 2019 · US
Method and apparatus to monitor and control a water system
US-2019144301-A1 · May 16, 2019 · US
Method of controlling a circulation-type wastewater treatment plant via a stored parameter relationship in a control unit
US-10273173-B2 · Apr 30, 2019 · US
Apparatus for relieving surface-layer clogging of denitrification deep-bed filter and method for running the same
US-10239775-B2 · Mar 26, 2019 · US
Granule-forming method and waste water treatment method
US-2019023594-A1 · Jan 24, 2019 · US
Membrane bioreactor for strengthening membrane fouling control and method thereof
US-2018370828-A1 · Dec 27, 2018 · US
Dual media system for treating wastewater containing selenium
US-10131559-B2 · Nov 20, 2018 · US
Methods and systems for treating spent caustic and regenerating media
US-10053375-B2 · Aug 21, 2018 · US
Fast biofilm formation method for organic filler during treatment of sewage with low c/n ratio
US-2018141843-A1 · May 24, 2018 · US
Ecological Method for Denitrification and Phosphorus Removal in Wastewater Treatment Process
US-2018134580-A1 · May 17, 2018 · US
Apparatus for reliving surface-layer clogging of denitrification deep-bed filter and method for running the same
US-2018099887-A1 · Apr 12, 2018 · US
Apparatus for sewage deep denitrification with high pollutant carrying capacity and low energy consumption, and method for running the same
US-2018099885-A1 · Apr 12, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F3/00?
- CPC C02F3/00 is the Cooperative Patent Classification code for “Biological treatment of water, waste water, or sewage {(C02F1/006 takes precedence)}.”
- How many patents are filed under CPC C02F3/00 (Biological treatment of water, waste water, or sewage {(C02F1/006 takes precedence)})?
- Our database includes 129 publications tagged with this CPC code.
- Is patent activity under CPC C02F3/00 growing?
- Publication counts under this code: 7 in 2024 vs 11 in 2025 (latest complete years).