Methods for water environment multi-interface governance and restoration in rivers and lakes
US-11802056-B2 · Oct 31, 2023 · US
by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131)
by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131) · 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 | C02F11/15 |
| Official title | by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131) |
| Display label | by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131) |
| Total patents | 74 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 10 |
| 2017 | 10 |
| 2018 | 3 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 9 |
| 2022 | 7 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for accurate positioning and in-situ treatment of pollutants at sediment-water interface
US-11753317-B2 · Sep 12, 2023 · US
Method for treating sludge using solar thermal concentrators
US-2023093562-A1 · Mar 23, 2023 · US
Rake-free thickening device including driving area
US-11602704-B2 · Mar 14, 2023 · US
Systems and methods for activating and dewatering sludge using acoustic pressure shock waves
US-2022371922-A1 · Nov 24, 2022 · US
Sludge three-dimensional electroosmosis drainage reinforcement method based on electric geotextile complex
US-2022178101-A1 · Jun 9, 2022 · US
Sludge drying apparatus
US-11352285-B2 · Jun 7, 2022 · US
Multi-stage sedimentation rake-free thickening device
US-11319215-B2 · May 3, 2022 · US
Methods for Water Environment Multi-Interface Governance and Restoration in Rivers and Lakes
US-2022073369-A1 · Mar 10, 2022 · US
Method for accurate positioning and in-situ treatment of pollutants at sediment-water interface
US-2022073382-A1 · Mar 10, 2022 · US
Systems and methods for separating surface materials from a fluid using acoustic pressure shock waves
US-11254589-B2 · Feb 22, 2022 · US
Device for efficient continuous electrokinetic dewatering of phosphatic clay suspensions
US-11208342-B2 · Dec 28, 2021 · US
Device for Efficient Continuous Electrokinetic Dewatering of Phosphatic Clay Suspensions
US-2021206682-A9 · Jul 8, 2021 · US
Device for sludge treatment
US-2021188682-A1 · Jun 24, 2021 · US
Sludge anaerobic fermentation treatment method with simultaneously enhanced acid production and phosphorus removal
US-2021179470-A1 · Jun 17, 2021 · US
Rake-free thickening device including driving area
US-2021178293-A1 · Jun 17, 2021 · US
Multi-stage sedimentation rake-free thickening device
US-2021179444-A1 · Jun 17, 2021 · US
Sludge dewatering device
US-11021385-B2 · Jun 1, 2021 · US
Reverse flow type multi-stage sedimentation rake-free thickening device
US-10994228-B2 · May 4, 2021 · US
Reverse flow type multi-stage sedimentation rake-free thickening device
US-2021008467-A1 · Jan 14, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F11/15?
- CPC C02F11/15 is the Cooperative Patent Classification code for “by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131).”
- How many patents are filed under CPC C02F11/15 (by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131))?
- Our database includes 74 publications tagged with this CPC code.
- Is patent activity under CPC C02F11/15 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).