Sludge withdrawal mechanism for wasting and returning settled sludge from secondary clarifier with granular sludge
US-12533609-B2 · Jan 27, 2026 · US
provided with flocculating compartments
provided with flocculating compartments · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01D21/08 |
| Official title | provided with flocculating compartments |
| Display label | provided with flocculating compartments |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 6 |
| 2021 | 6 |
| 2022 | 5 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and apparatus for treating wastewater
US-2025074804-A1 · Mar 6, 2025 · US
Method for measuring a degree of homogeneity of oils using back titration and measuring apparatus using the same
US-12153030-B2 · Nov 26, 2024 · US
Separation device and separation system
US-2024375025-A1 · Nov 14, 2024 · US
Sludge Withdrawal Mechanism for Wasting and Returning Settled Sludge from Secondary Clarifier with Granular Sludge
US-2024109006-A1 · Apr 4, 2024 · US
Sludge withdrawal mechanism for wasting and returning settled sludge from secondary clarifier with granular sludge
US-11883764-B2 · Jan 30, 2024 · US
Tailings settling-dewatering-solidifying device and experimental method thereof
US-11787721-B2 · Oct 17, 2023 · US
Water treatment plant having integrated ballasted flocculation and decantation, and a corresponding method
US-11787712-B2 · Oct 17, 2023 · US
Sampling device for coagulation treatment device, coagulation treatment device, and water treatment method
US-2023295022-A1 · Sep 21, 2023 · US
Si removal from aqueous streams of minerals processing plants
US-2023202873-A1 · Jun 29, 2023 · US
Sludge withdrawal mechanism for wasting and returning settled sludge from secondary clarifier with granular sludge
US-2023191288-A1 · Jun 22, 2023 · US
Rake-free thickening device including driving area
US-11602704-B2 · Mar 14, 2023 · US
Single stage clarifier and mixing assembly
US-11596912-B2 · Mar 7, 2023 · US
Flocculating, grading, and dewatering device
US-2022379241-A1 · Dec 1, 2022 · US
Tailings Settling-dewatering-solidifying Device and Experimental Method Thereof
US-2022324739-A1 · Oct 13, 2022 · US
Flocculation and sedimentation apparatus
US-11406919-B2 · Aug 9, 2022 · US
Multi-stage sedimentation rake-free thickening device
US-11319215-B2 · May 3, 2022 · US
Method and arrangement for controlling a dewatering process
US-11224829-B2 · Jan 18, 2022 · US
Single stage clarifier and mixing assembly
US-2021205771-A1 · Jul 8, 2021 · US
Method for measuring a degree of homogeneity of oils using reverse titration and measuring apparatus using the same
US-2021199633-A1 · Jul 1, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D21/08?
- CPC B01D21/08 is the Cooperative Patent Classification code for “provided with flocculating compartments.”
- How many patents are filed under CPC B01D21/08 (provided with flocculating compartments)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC B01D21/08 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).