Composition and method for the dewatering of aqueous suspensions
US-12330988-B2 · Jun 17, 2025 · US
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using drum filters
using drum 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 | C02F11/126 |
| Official title | using drum filters |
| Display label | using drum filters |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 1 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and system for pre-treating high strength wastewater
US-2024182343-A1 · Jun 6, 2024 · US
Method and apparatus for direct drying of inorganic sludge with drum drawing process
US-11891318-B2 · Feb 6, 2024 · US
Anaerobic digestion of organic fraction of solid waste with high quality digestate
US-11787720-B2 · Oct 17, 2023 · US
Wash press having improved rotor structure and housing for removing the same
US-11524253-B2 · Dec 13, 2022 · US
Wastewater cleaning system and process
US-11453602-B2 · Sep 27, 2022 · US
System and Method for Treating Wastewater That Includes Biosorption and Filtration
US-2022194831-A1 · Jun 23, 2022 · US
Sludge treatment device and sludge treatment system
US-2022111477-A1 · Apr 14, 2022 · US
Composition and method for the dewatering of aqueous suspensions
US-2021347691-A1 · Nov 11, 2021 · US
Method and apparatus for direct drying of inorganic sludge with drum drawing process
US-2021347665-A1 · Nov 11, 2021 · US
Method for dewatering of sludge from a pulp, paper or board making process
US-10858782-B2 · Dec 8, 2020 · US
Wash press having improved rotor structure and housing for removing the same
US-2020368649-A1 · Nov 26, 2020 · US
Anaerobic digestion of organic fraction of solid waste with high quality digestate
US-2020354250-A1 · Nov 12, 2020 · US
Wastewater Cleaning System and Process
US-2020156963-A1 · May 21, 2020 · US
Method for dewatering of sludge from a pulp, paper or board making process
US-2020063340-A1 · Feb 27, 2020 · US
Method of treating cellulose containing waste water sludge for the manufacture of linerboard and cellulosic ethanol production
US-9896358-B2 · Feb 20, 2018 · US
Method of treating cellulose containing waste water sludge for the manufacture of linerboard and cellulosic ethanol production
US-2017362106-A1 · Dec 21, 2017 · US
Treatment of waste products with anaerobic digestion
US-9809481-B2 · Nov 7, 2017 · US
Use of celluloses in sludge dewatering, and sludge products thereof
US-9776900-B2 · Oct 3, 2017 · US
Sludge screw thickener with screen rotation during cleaning
US-9561978-B2 · Feb 7, 2017 · US