Micron iron-based primary battery material, preparation method and membrane bioreactor system
US-12398055-B2 · Aug 26, 2025 · US
Apparatus and plants for the biological treatment of water, waste water or sewage
Apparatus and plants for the biological treatment of water, waste water or sewage · 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 | C02F2203/00 |
| Official title | Apparatus and plants for the biological treatment of water, waste water or sewage |
| Display label | Apparatus and plants for the biological treatment of water, waste water or sewage |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process and apparatus for nitritation using membrane aerated biofilm reactor
US-2025236546-A1 · Jul 24, 2025 · US
Micron iron-based primary battery material, preparation method and membrane bioreactor system
US-2025230079-A1 · Jul 17, 2025 · US
Process and apparatus for nitritation using membrane aerated biofilm reactor
US-12297132-B2 · May 13, 2025 · US
Anaerobic ammonia oxidation treatment system for treating wastewater with high ammonia nitrogen and high cod
US-2024059597-A1 · Feb 22, 2024 · US
Process and apparatus for nitritation using membrane aerated biofilm reactor
US-2023079372-A1 · Mar 16, 2023 · US
Multivalent iron bio-inhibitor from waste bauxite residue to control reservoir souring
US-11535790-B2 · Dec 27, 2022 · US
Process for enhanced anaerobic digestion of sludge by alcoholization of food waste
US-11453607-B2 · Sep 27, 2022 · US
Multivalent iron bio-inhibitor from waste bauxite residue to control reservoir souring
US-2022073808-A1 · Mar 10, 2022 · US
Process for enhanced anaerobic digestion of sludge by alcoholization of food waste
US-2022064043-A1 · Mar 3, 2022 · US
Sewage/wastewater treatment system using granular activated sludge and membrane bio-reactor and sewage/wastewater treatment method using the same
US-10961141-B2 · Mar 30, 2021 · US
Sewage/wastewater treatment system using granular activated sludge and membrane bio-reactor and sewage/wastewater treatment method using the same
US-2020131065-A1 · Apr 30, 2020 · US
Sewage/wastewater treatment system using granular activated sludge and membrane bio-reactor and sewage/wastewater treatment method using the same
US-10550022-B2 · Feb 4, 2020 · US
Sludge treatment system and sludge treatment method
US-10259731-B2 · Apr 16, 2019 · US
Wastewater overflow systems and methods
US-10106446-B2 · Oct 23, 2018 · US
Method for improving quality of aquaculture pond water
US-9908799-B2 · Mar 6, 2018 · US
Recycling activated sludge by hydrodynamic seperator (HDS) to enable high MLSS bioreactor to process high influent flow and/or high strength wastewater
US-9758407-B2 · Sep 12, 2017 · US
Sewage/wastewater treatment system using granular activated sludge and membrane bio-reactor and sewage/wastewater treatment method using the same
US-2017203984-A1 · Jul 20, 2017 · US
Syngas biomethanation process and anaerobic digestion system
US-2017166930-A1 · Jun 15, 2017 · US
Integrated hydrodynamic separator (hds) structure, effluent channel for separating mixed liquor suspended solids (mlss) in wastewater treatment
US-2017066669-A1 · Mar 9, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2203/00?
- CPC C02F2203/00 is the Cooperative Patent Classification code for “Apparatus and plants for the biological treatment of water, waste water or sewage.”
- How many patents are filed under CPC C02F2203/00 (Apparatus and plants for the biological treatment of water, waste water or sewage)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC C02F2203/00 growing?
- Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).