Apparatus and method for green hydrogen production using submerged desalination system
US-2024318323-A1 · Sep 26, 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 | C02F2201/009 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 335 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 9 |
| 2017 | 22 |
| 2018 | 21 |
| 2019 | 40 |
| 2020 | 23 |
| 2021 | 31 |
| 2022 | 39 |
| 2023 | 48 |
| 2024 | 38 |
| 2025 | 39 |
| 2026 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Negative electrostatic filtration apparatus
US-11878310-B2 · Jan 23, 2024 · US
Data output for high frequency domain
US-10157648-B1 · Dec 18, 2018 · US
Solar powered water purification device with cylindrical structure
US-10150050-B2 · Dec 11, 2018 · US
Coupling photovoltaic, concentrated solar power, and wind technologies for desalination
US-2018339916-A1 · Nov 29, 2018 · US
Fluid sterilization device and water purifier using the same
US-2018290900-A1 · Oct 11, 2018 · US
Liquid purification methods and apparatus
US-2018272248-A1 · Sep 27, 2018 · US
Molybdenum disulfide and related materials for water treatment
US-2018265381-A1 · Sep 20, 2018 · US
Coupling photovoltaic and concentrated solar power technologies for desalination
US-10065868-B2 · Sep 4, 2018 · US
Method and automated collection system for marine plastic debris
US-10046983-B2 · Aug 14, 2018 · US
Liquid purification methods and apparatus
US-10035080-B2 · Jul 31, 2018 · US
System for Cleansing Organisms from Water
US-2018208487-A1 · Jul 26, 2018 · US
Solar cooling and water salination system
US-10022646-B1 · Jul 17, 2018 · US
Optical fluid treatment device
US-9975788-B2 · May 22, 2018 · US
System for cleansing organisms from water
US-9944541-B2 · Apr 17, 2018 · US
Vacuum Membrane Desalination System
US-2018093905-A1 · Apr 5, 2018 · US
Solar-Thermal Water Purification by Recycling Photovoltaic Reflection Losses
US-2018079658-A1 · Mar 22, 2018 · US
Building materials from an aqueous solution
US-2018072626-A1 · Mar 15, 2018 · US
Microwave-assisted distilation system
US-2018065865-A1 · Mar 8, 2018 · US
Building materials from an aqueous solution
US-9862643-B2 · Jan 9, 2018 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2201/009?
- CPC C02F2201/009 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C02F2201/009 (Chemistry & Metallurgy)?
- Our database includes 335 publications tagged with this CPC code.
- Is patent activity under CPC C02F2201/009 growing?
- Publication counts under this code: 38 in 2024 vs 39 in 2025 (latest complete years).