Method for treating aqueous effluent
US-2018362371-A1 · Dec 20, 2018 · US
with addition of chemical agents
with addition of chemical agents · 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 | C02F11/14 |
| Official title | with addition of chemical agents |
| Display label | with addition of chemical agents |
| Total patents | 185 |
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 | 7 |
| 2016 | 11 |
| 2017 | 30 |
| 2018 | 33 |
| 2019 | 25 |
| 2020 | 21 |
| 2021 | 21 |
| 2022 | 9 |
| 2023 | 9 |
| 2024 | 11 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and apparatus for dewatering biological solid material employing both microwave irradiation and solvent extraction
US-2018345337-A1 · Dec 6, 2018 · US
Method for treating suspensions of solid particles in water using amphoteric polymers
US-2018264381-A1 · Sep 20, 2018 · US
Enhancement of dewatering using soy flour or soy protein
US-10000393-B2 · Jun 19, 2018 · US
Method of manufacturing filter aid
US-9963728-B2 · May 8, 2018 · US
Filtration Aid and Filtration Treatment Method
US-2018111110-A1 · Apr 26, 2018 · US
Process for flocculating and dewatering oil sand mature fine tailings
US-2018079966-A1 · Mar 22, 2018 · US
Flat-wire belt conveyors
US-2018072601-A1 · Mar 15, 2018 · US
Systems and methods for processing earthen slurries
US-2018071662-A1 · Mar 15, 2018 · US
Air pollution control system and air pollution control method
US-9895658-B2 · Feb 20, 2018 · US
Alternative additives to enhance slurry dewatering
US-9896366-B2 · Feb 20, 2018 · US
Solid-Liquid Separation System
US-2018003438-A1 · Jan 4, 2018 · US
Processes and treatment systems for treating high phosphorous containing fluids
US-2017369344-A1 · Dec 28, 2017 · 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
Method for dewatering sludge assisted by a flocculating reagent and facility for implementing such a method
US-2017349470-A1 · Dec 7, 2017 · US
Method for preparing a dry cationic hydrogel polymer product, polymer product and its use
US-2017320979-A1 · Nov 9, 2017 · US
Method for treating mineral sludge by flocculation in-line then above ground
US-9809482-B2 · Nov 7, 2017 · US
Abrasive regeneration method
US-9802337-B2 · Oct 31, 2017 · US
Method for thickening or dehydrating sludge
US-9790111-B2 · Oct 17, 2017 · US
Processes and treatment systems for treating high phosphorous containing fluids
US-9790110-B2 · Oct 17, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F11/14?
- CPC C02F11/14 is the Cooperative Patent Classification code for “with addition of chemical agents.”
- How many patents are filed under CPC C02F11/14 (with addition of chemical agents)?
- Our database includes 185 publications tagged with this CPC code.
- Is patent activity under CPC C02F11/14 growing?
- Publication counts under this code: 11 in 2024 vs 5 in 2025 (latest complete years).