Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
US-10131550-B2 · Nov 20, 2018 · US
Activated sludge processes
Activated sludge processes · 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 | C02F3/12 |
| Official title | Activated sludge processes |
| Display label | Activated sludge processes |
| Total patents | 188 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 9 |
| 2017 | 22 |
| 2018 | 19 |
| 2019 | 19 |
| 2020 | 20 |
| 2021 | 14 |
| 2022 | 17 |
| 2023 | 14 |
| 2024 | 14 |
| 2025 | 25 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Wastewater overflow systems and methods
US-10106446-B2 · Oct 23, 2018 · US
Fault Identifying Method for Sludge Bulking Based on a Recurrent RBF Neural Network
US-2018276531-A1 · Sep 27, 2018 · US
Contra-rotating multi-layer propeller unit for multi-phase flow
US-2018184626-A1 · Jul 5, 2018 · US
Solid carbon source, bioreactor having the same and method for wastewater treatment using the same
US-2018179091-A1 · Jun 28, 2018 · US
Systems and methods for continuous measurement of an analyte
US-2018148360-A1 · May 31, 2018 · US
Device and method for supervising biofilm culturing
US-2018136168-A1 · May 17, 2018 · US
Aeration control system and method for wastewater
US-2018127286-A1 · May 10, 2018 · US
Wastewater treatment method and equipment using a dual-diffusion oxygen supply horizontal-flow biofilm
US-9957177-B2 · May 1, 2018 · US
Membrane separation type activated sludge treatment method and membrane separation type activated sludge treatment system
US-2018111096-A1 · Apr 26, 2018 · US
Water treatment system and water treatment method
US-2018105443-A1 · Apr 19, 2018 · US
Microbial Flora Analysis System, Determination System, Microbial Flora Analysis Method, and Determination Method
US-2018105444-A1 · Apr 19, 2018 · US
Prediction-Rule Generating System, Prediction System, Prediction-Rule Generating Method, and Prediction Method
US-2018105858-A1 · Apr 19, 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
Chloroperoxidase-catalyzed degradation of pharmaceutical pollutants in wastewater
US-9938176-B1 · Apr 10, 2018 · US
Method for resourceful utilization of desorption liquid generated in the resin ion exchange process
US-9908798-B2 · Mar 6, 2018 · US
Industrial waste water treatment system and treatment method
US-2018037483-A1 · Feb 8, 2018 · US
Method and installation for pre-treatment employing a filter cake
US-2017368485-A1 · Dec 28, 2017 · US
Method for treating wastewater, and activator for treating wastewater
US-2017362109-A1 · Dec 21, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F3/12?
- CPC C02F3/12 is the Cooperative Patent Classification code for “Activated sludge processes.”
- How many patents are filed under CPC C02F3/12 (Activated sludge processes)?
- Our database includes 188 publications tagged with this CPC code.
- Is patent activity under CPC C02F3/12 growing?
- Publication counts under this code: 14 in 2024 vs 25 in 2025 (latest complete years).