Ambient air drying of sludge
US-12429285-B2 · Sep 30, 2025 · US
Sludges, e.g. sewage, waste, industrial processes, cooling towers
Sludges, e.g. sewage, waste, industrial processes, cooling towers · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F26B2200/18 |
| Official title | Sludges, e.g. sewage, waste, industrial processes, cooling towers |
| Display label | Sludges, e.g. sewage, waste, industrial processes, cooling towers |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Drying apparatuses, dust separation devices, crushing devices, organic waste disposal systems, and operating methods
US-12270605-B1 · Apr 8, 2025 · US
Atomizing spray dryer
US-12209806-B2 · Jan 28, 2025 · US
Slurry drying plant, a method for drying slurry and use of a slurry drying plant
US-12078416-B2 · Sep 3, 2024 · US
Sludge treatment apparatus and excreta treatment apparatus including same
US-2024262733-A1 · Aug 8, 2024 · US
Mobile refractance window dryer
US-2024102731-A1 · Mar 28, 2024 · US
Sludge drying apparatus
US-11912597-B2 · Feb 27, 2024 · US
Method and apparatus for direct drying of inorganic sludge with drum drawing process
US-11891318-B2 · Feb 6, 2024 · US
Low energy drying of swine lagoon sludge or digestate
US-11788790-B2 · Oct 17, 2023 · US
Sludge Treatment Process
US-2023303417-A1 · Sep 28, 2023 · US
Processes and systems for de-watering sludge
US-2023234874-A1 · Jul 27, 2023 · US
Solid feces treatment apparatus and individual feces treatment system including same
US-2023194081-A1 · Jun 22, 2023 · US
Atomizing spray dryer
US-2023175774-A1 · Jun 8, 2023 · US
Continuous centrifugal dewatering device
US-2022388014-A1 · Dec 8, 2022 · US
Ambient air drying of sludge
US-2022390174-A1 · Dec 8, 2022 · US
Drying apparatus and use thereof and process for producing an isocyanate using the drying apparatus
US-2022187018-A1 · Jun 16, 2022 · US
High-moisture sludge ultra-fine synchronizing deep-drying device and a method thereof
US-11286192-B2 · Mar 29, 2022 · US
A slurry drying plant, a method for drying slurry and use of a slurry drying plant
US-2021396466-A1 · Dec 23, 2021 · US
Slurry drying plant, a method for drying slurry and use of a slurry drying plant
US-11187458-B2 · Nov 30, 2021 · US
Method and apparatus for direct drying of inorganic sludge with drum drawing process
US-2021347665-A1 · Nov 11, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F26B2200/18?
- CPC F26B2200/18 is the Cooperative Patent Classification code for “Sludges, e.g. sewage, waste, industrial processes, cooling towers.”
- How many patents are filed under CPC F26B2200/18 (Sludges, e.g. sewage, waste, industrial processes, cooling towers)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC F26B2200/18 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).