Method and apparatus for producing hydroxyl radicals
US-12559391-B2 · Feb 24, 2026 · US
Gas diffusion electrodes
Gas diffusion electrodes · 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 | C02F2001/46166 |
| Official title | {Gas diffusion electrodes} |
| Display label | Gas diffusion electrodes |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrochemical membrane degassing apparatus
US-12485369-B2 · Dec 2, 2025 · US
Catalyst for co-generation of desalinated water and electricity
US-2024391802-A1 · Nov 28, 2024 · US
Robust Low-cost Air Diffusion Cathodes for Water Treatment
US-2024384422-A1 · Nov 21, 2024 · US
Organic wastewater treatment by a single-atom catalytic Fenton filter and electrolytically-generated H2O2
US-12012345-B2 · Jun 18, 2024 · US
Systems and Methods for Electrochemical Hydrogen Looping
US-2024133051-A1 · Apr 25, 2024 · US
Algae cultivation systems and methods related thereto
US-11945736-B2 · Apr 2, 2024 · US
Electrochemical membrane degassing apparatus
US-2024009595-A1 · Jan 11, 2024 · US
Electrified Membrane Flow-Cell Reactor For Concurrent Nitrate Reduction And Ammonia Production From Wastewater
US-2023365442-A1 · Nov 16, 2023 · US
Wastewater treatment method and wastewater treatment apparatus
US-11794147-B2 · Oct 24, 2023 · US
Hydrogen peroxide production device and use thereof
US-2023312376-A1 · Oct 5, 2023 · US
Polymer electrolyte membrane, membrane electrode assembly and water electrolyzer
US-11742507-B2 · Aug 29, 2023 · US
Electrochemical desalination system
US-2023264140-A1 · Aug 24, 2023 · US
Wastewater treatment method and wastewater treatment apparatus
US-2023241555-A1 · Aug 3, 2023 · US
Water-processing electrochemical reactor
US-2023129237-A1 · Apr 27, 2023 · US
Apparatus for producing acidic aqueous solution and method for producing acidic aqueous solution
US-2022242757-A1 · Aug 4, 2022 · US
Method and device for sewage treatment
US-11352271-B2 · Jun 7, 2022 · US
High performance electrocoagulation systems for removing water contaminants
US-2022162094-A1 · May 26, 2022 · US
Electrodialyzer and electrodialysis system for co2 capture from ocean water
US-2022144673-A1 · May 12, 2022 · US
Method and appartus for producing hydroxyl radicals
US-2021355001-A1 · Nov 18, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2001/46166?
- CPC C02F2001/46166 is the Cooperative Patent Classification code for “Gas diffusion electrodes.”
- How many patents are filed under CPC C02F2001/46166 (Gas diffusion electrodes)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC C02F2001/46166 growing?
- Publication counts under this code: 6 in 2024 vs 1 in 2025 (latest complete years).