Straight-line sewage treatment system for enhanced treatment of low c/n domestic sewage
US-2024092664-A1 · Mar 21, 2024 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C02F1/72 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 374 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 29 |
| 2016 | 35 |
| 2017 | 29 |
| 2018 | 27 |
| 2019 | 32 |
| 2020 | 26 |
| 2021 | 32 |
| 2022 | 38 |
| 2023 | 42 |
| 2024 | 38 |
| 2025 | 35 |
| 2026 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for removal of radioactive contamination from wastewater
US-9527756-B2 · Dec 27, 2016 · US
Seawater plant with inclined aeration and mixed auto recovery
US-2016368795-A1 · Dec 22, 2016 · US
Surfactant removal from produced waters
US-2016368786-A1 · Dec 22, 2016 · US
Methods of inhibiting fouling in liquid systems
US-9505637-B2 · Nov 29, 2016 · US
Composition for treatment of ballast water
US-9505640-B2 · Nov 29, 2016 · US
Medium material and its preparation method for elimination of arsenic pollution from groundwater
US-2016332137-A1 · Nov 17, 2016 · US
Use of phosphotartaric acid and the salts thereof for the treatment of water in water-conducting systems
US-2016326037-A1 · Nov 10, 2016 · US
Methods of treating a water sample or a substrate to remove organic compounds
US-2016318779-A1 · Nov 3, 2016 · US
Submergible Biocide Reactor and Method
US-2016311708-A1 · Oct 27, 2016 · US
Gasification Combined Generation System Through Coal and Industrial Waste Water
US-2016312697-A1 · Oct 27, 2016 · US
Carbon dioxide mineralization using reject brine
US-9475000-B2 · Oct 25, 2016 · US
Very high frequency (VHF) driven atmospheric plasma sources and point of use fertigation of irrigation water utilizing plasma production of nitrogen bearing species
US-9475710-B2 · Oct 25, 2016 · US
Modular Oxidant Delivery System
US-2016288178-A1 · Oct 6, 2016 · US
Wastewater treatment process
US-9458038-B2 · Oct 4, 2016 · US
Process, Method, and System for Removing Mercury From Pipelines
US-2016281005-A1 · Sep 29, 2016 · US
Systems and methods for treating non-point source pollutants in water runoff using slow-release agents
US-2016257584-A1 · Sep 8, 2016 · US
Vortex diodes as effluent treatment devices
US-9422952-B2 · Aug 23, 2016 · US
Water treatment system
US-2016214875-A1 · Jul 28, 2016 · US
Recovery of phosphorus values and salt impurities from aqueous waste streams
US-9394173-B2 · Jul 19, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/72?
- CPC C02F1/72 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C02F1/72 (Chemistry & Metallurgy)?
- Our database includes 374 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/72 growing?
- Publication counts under this code: 38 in 2024 vs 35 in 2025 (latest complete years).