Filtration aid and filtration treatment method
US-10850995-B2 · Dec 1, 2020 · US
using natural chemical compounds
using natural chemical compounds · 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 | C02F1/5263 |
| Official title | {using natural chemical compounds} |
| Display label | using natural chemical compounds |
| Total patents | 121 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 7 |
| 2017 | 11 |
| 2018 | 16 |
| 2019 | 6 |
| 2020 | 17 |
| 2021 | 13 |
| 2022 | 11 |
| 2023 | 8 |
| 2024 | 11 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Water-Purifying Agent and Water Purification Method
US-2020369539-A1 · Nov 26, 2020 · US
Aquifer storage and recovery system using natural coagulant
US-2020325043-A1 · Oct 15, 2020 · US
Wet paint booth circulating water treatment agent
US-10793453-B2 · Oct 6, 2020 · US
Enhanced foam removal of total suspended solids and multiply charged cations from aqueous or aqueous/oil mixed phase via increased viscoelasticity
US-10773973-B2 · Sep 15, 2020 · US
A method and system for optimization of coagulation and/or flocculation in a water treatment process
US-2020223719-A1 · Jul 16, 2020 · US
Method for removing humic substances from an aqueous alkaline solution
US-10662092-B2 · May 26, 2020 · US
Modular System and Method for Mercury Speciation in a Fluid Sample
US-2020131061-A1 · Apr 30, 2020 · US
Method for treating seawater by bioflocculation and flotation and corresponding installation
US-2020071204-A1 · Mar 5, 2020 · US
Treatment agent for wet-coating-booth circulating water
US-2020039850-A1 · Feb 6, 2020 · US
Polysaccharide agents and methods of their use for removing solids from water
US-10442710-B2 · Oct 15, 2019 · US
Extract of plant powder, and water purifier
US-2019256387-A1 · Aug 22, 2019 · US
Composition and processfor removing impurities from a circulating water system
US-10308531-B2 · Jun 4, 2019 · US
Water treatment using cryptocrystalline magnesite
US-2019119131-A1 · Apr 25, 2019 · US
Water treatment
US-2019039918-A1 · Feb 7, 2019 · US
Water treatment
US-2019031533-A1 · Jan 31, 2019 · US
Method for flocculating algae using polymers including tannin
US-10160673-B2 · Dec 25, 2018 · US
Phosphorus precipitation and membrane flux in membrane bioreactors
US-2018354824-A1 · Dec 13, 2018 · US
Composition and method to reduce sediment and bacterial contamination from water
US-10125037-B1 · Nov 13, 2018 · US
Method for wastewater treatment by urine separation, seawater addition, and nitrification and in-sewer denitrification
US-10093568-B2 · Oct 9, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/5263?
- CPC C02F1/5263 is the Cooperative Patent Classification code for “using natural chemical compounds.”
- How many patents are filed under CPC C02F1/5263 (using natural chemical compounds)?
- Our database includes 121 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/5263 growing?
- Publication counts under this code: 11 in 2024 vs 10 in 2025 (latest complete years).