Water Purification Agent and Water Purification Method
US-2019389752-A1 · Dec 26, 2019 · US
using specific organic precipitants
using specific organic precipitants · 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 | C02F1/5272 |
| Official title | {using specific organic precipitants} |
| Display label | using specific organic precipitants |
| Total patents | 145 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 13 |
| 2017 | 12 |
| 2018 | 11 |
| 2019 | 16 |
| 2020 | 14 |
| 2021 | 21 |
| 2022 | 13 |
| 2023 | 11 |
| 2024 | 8 |
| 2025 | 11 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sludge dehydrating agent and sludge dehydrating method
US-2019375665-A1 · Dec 12, 2019 · US
Sorbitol based gelators and method thereof
US-2019359624-A1 · Nov 28, 2019 · US
Multiphase polymer suspension and use thereof
US-2019330517-A1 · Oct 31, 2019 · US
Process for tailings remediation
US-2019276345-A1 · Sep 12, 2019 · US
Extract of plant powder, and water purifier
US-2019256387-A1 · Aug 22, 2019 · US
Acoustic mixing for flocculant addition to mineral suspensions
US-2019233310-A1 · Aug 1, 2019 · US
Process for treatment of aqueous effluent
US-2019233313-A1 · Aug 1, 2019 · US
Method to treat flushing liquor systems in coke plants
US-10308532-B2 · Jun 4, 2019 · US
Method for removing fluorinated organic compounds from contaminated fluids, and adsorbent component and adsorbent kit used therefor
US-10196286-B2 · Feb 5, 2019 · US
Guanidine compounds for removal of oxyanions from aqueous solutions and for carbon dioxide capture
US-2019010118-A1 · Jan 10, 2019 · US
Treatment of produced water concentrate
US-10131561-B2 · Nov 20, 2018 · US
Produced water treatment and solids precipitation from thermal treatment blowdown
US-10132145-B2 · Nov 20, 2018 · US
Methods and compositions for the treatment and recovery of purge solvent
US-10093562-B2 · Oct 9, 2018 · US
Treatment method for solution containing metal ions using cation adsorbent
US-10081850-B2 · Sep 25, 2018 · US
Polysaccharide agents and methods of their use for removing solids from water
US-2018230029-A1 · Aug 16, 2018 · US
Method for detecting and controlling the amount of cationic species in a water stream
US-2018208489-A1 · Jul 26, 2018 · US
Structured block copolymers
US-10005873-B2 · Jun 26, 2018 · US
Nanofibrillar cellulose as a phase separation agent
US-9975062-B2 · May 22, 2018 · US
Guanidine compounds for removal of oxyanions from aqueous solutions and for carbon dioxide capture
US-2018134655-A1 · May 17, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/5272?
- CPC C02F1/5272 is the Cooperative Patent Classification code for “using specific organic precipitants.”
- How many patents are filed under CPC C02F1/5272 (using specific organic precipitants)?
- Our database includes 145 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/5272 growing?
- Publication counts under this code: 8 in 2024 vs 11 in 2025 (latest complete years).