Plate-type ozone generator and system for generating ozone
US-2024414832-A1 · Dec 12, 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 | C02F1/78 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 529 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 37 |
| 2017 | 37 |
| 2018 | 67 |
| 2019 | 54 |
| 2020 | 57 |
| 2021 | 55 |
| 2022 | 58 |
| 2023 | 38 |
| 2024 | 47 |
| 2025 | 41 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for recovering nutrients from a high nitrogenous liquid waste
US-2024083791-A1 · Mar 14, 2024 · US
Grey water system
US-2024051852-A1 · Feb 15, 2024 · US
Sludge treatment system and sludge treatment method
US-2016368797-A1 · Dec 22, 2016 · US
Ozone water supply method and ozone water supply device
US-2016361693-A1 · Dec 15, 2016 · US
Method for disinfecting a fluid with a palladium-doped tungsten trioxide photo-catalyst
US-2016355409-A1 · Dec 8, 2016 · US
Ultrasound and acoustophoresis for water purification
US-2016347628-A1 · Dec 1, 2016 · US
Methods of inhibiting fouling in liquid systems
US-9505637-B2 · Nov 29, 2016 · US
Ozone shower device
US-9486817-B2 · Nov 8, 2016 · US
Membrane water treatment factility and method incorporating adsorption on an adsorbent powdered material and means for limiting the abrasion of the membranes
US-2016318777-A1 · Nov 3, 2016 · US
Bromate suppression
US-2016295867-A1 · Oct 13, 2016 · US
Charging device of circulating water utilization system and circulating-water utilization system
US-2016292795-A1 · Oct 6, 2016 · US
Water-using domestic appliance with a catalytically active interior surface and method for operating the same
US-9451866-B2 · Sep 27, 2016 · US
Water treatment systems and methods
US-2016251244-A1 · Sep 1, 2016 · US
Vortex diodes as effluent treatment devices
US-9422952-B2 · Aug 23, 2016 · US
Circulation type aquaculture method and circulation type aquaculture device
US-2016227749-A1 · Aug 11, 2016 · US
Water treatment system
US-2016214875-A1 · Jul 28, 2016 · US
Bromate suppression
US-9398769-B2 · Jul 26, 2016 · US
Modular microplasma microchannel reactor devices, miniature reactor modules and ozone generation devices
US-9390894-B2 · Jul 12, 2016 · US
Plasma generator, and cleaning and purifying device apparatus and small-sized electrical appliance using plasma generator
US-9392680-B2 · Jul 12, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/78?
- CPC C02F1/78 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C02F1/78 (Chemistry & Metallurgy)?
- Our database includes 529 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/78 growing?
- Publication counts under this code: 47 in 2024 vs 41 in 2025 (latest complete years).