Method for regulating the addition of a flocculant to a sludge
US-12590023-B2 · Mar 31, 2026 · US
Treatment of sludge; Devices therefor
Treatment of sludge; Devices therefor · 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 | C02F11/00 |
| Official title | Treatment of sludge; Devices therefor |
| Display label | Treatment of sludge; Devices therefor |
| Total patents | 59 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 9 |
| 2017 | 6 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 7 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 1 |
| 2024 | 8 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Treatment method for full resource recovery from sludge in municipal wastewater treatment plants
US-2026042692-A1 · Feb 12, 2026 · US
Conditioning method for deep dewatering of sludge from municipal wastewater treatment plants
US-2026042693-A1 · Feb 12, 2026 · US
Chemical looping gasification method for iron-rich sludge
US-12503659-B2 · Dec 23, 2025 · US
A novel process for refining a feedstock
US-2025368919-A1 · Dec 4, 2025 · US
Sludge-derived plant biostimulant, and directional preparation method and application thereof
US-2025340495-A1 · Nov 6, 2025 · US
Chemical looping gasification method for iron-rich sludge
US-2025333659-A1 · Oct 30, 2025 · US
Method for treating high-concentration fermentation by-products generated in amino acid fermentation process
US-2025230082-A1 · Jul 17, 2025 · US
Method for treating waste waters and residue sludge by means of carbonation and decarbonation in a chemical installation for nitridation in a molten salt bath
US-2025122105-A1 · Apr 17, 2025 · US
Method for Regulating the Addition of a Flocculant to a Sludge
US-2024383790-A1 · Nov 21, 2024 · US
A system and a method for storing biological feedstock
US-2024263083-A1 · Aug 8, 2024 · US
Method for preparing sludge conditioner from water supply sludge and use of sludge conditioner
US-2024217856-A1 · Jul 4, 2024 · US
Rotational flow rotation deoiling method and device for oil-based mud rock debris
US-12017937-B2 · Jun 25, 2024 · US
Sludge anaerobic fermentation treatment method with simultaneously enhanced acid production and phosphorus removal
US-11970415-B2 · Apr 30, 2024 · US
Method for deodorizing sludge with metal salt and tannin extract together, deodorized sludge, and use thereof
US-11952298-B2 · Apr 9, 2024 · US
Method for deodorizing sludge with metal salt and tannin extract together, deodorized sludge, and use thereof
US-2024083798-A1 · Mar 14, 2024 · US
Sludge composite conditioner based on iron-containing sludge pyrolysis residue as well as preparation method and use thereof
US-11858836-B2 · Jan 2, 2024 · US
Organic sludge treatment device and treatment method
US-11591246-B2 · Feb 28, 2023 · US
Method for treating wastewater and wastewater sludge using a percarboxylic acid
US-11535539-B2 · Dec 27, 2022 · US
Method for realizing sludge safe disposal and resource recovery through sludge liquefaction and stratification
US-11459259-B2 · Oct 4, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F11/00?
- CPC C02F11/00 is the Cooperative Patent Classification code for “Treatment of sludge; Devices therefor.”
- How many patents are filed under CPC C02F11/00 (Treatment of sludge; Devices therefor)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC C02F11/00 growing?
- Publication counts under this code: 8 in 2024 vs 6 in 2025 (latest complete years).