Straight-line sewage treatment system for enhanced treatment of low C/N domestic sewage
US-12590019-B2 · Mar 31, 2026 · US
Arranged-type packing, e.g. stacks, arrays
Arranged-type packing, e.g. stacks, arrays · 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 | C02F3/101 |
| Official title | {Arranged-type packing, e.g. stacks, arrays} |
| Display label | Arranged-type packing, e.g. stacks, arrays |
| Total patents | 58 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 9 |
| 2019 | 4 |
| 2020 | 9 |
| 2021 | 8 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 10 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Automated process for treatment of refinery wastewater
US-12583775-B2 · Mar 24, 2026 · US
Device for filtering and purifying greywater or other wastewater to generate a new, clean and safe water source by means of a biological filter
US-2025353763-A1 · Nov 20, 2025 · US
Water aeration and treatment method
US-12145874-B1 · Nov 19, 2024 · US
Water aeration and treatment method
US-2024375982-A1 · Nov 14, 2024 · US
Water retention and aeration treatment method for contaminated water
US-12091341-B2 · Sep 17, 2024 · US
Wastewater treatment device and wastewater treatment method
US-12060288-B2 · Aug 13, 2024 · US
Water retention and aeration treatment method for contaminated water
US-2024228344-A1 · Jul 11, 2024 · US
Biofilm bioreactor
US-11987782-B2 · May 21, 2024 · US
Septic water treatment method for removing carbonaceous and nitrogenous compounds
US-11981591-B2 · May 14, 2024 · US
Methods of Feedstock Conversion Using a Biofilm Bioreactor
US-2024117286-A1 · Apr 11, 2024 · US
Straight-line sewage treatment system for enhanced treatment of low c/n domestic sewage
US-2024092664-A1 · Mar 21, 2024 · US
Automated process for treatment of refinery wastewater
US-2024067544-A1 · Feb 29, 2024 · US
Septic water treatment method for removing carbonaceous and nitrogenous compounds
US-2023373827-A1 · Nov 23, 2023 · US
Method for water treatment and recycling
US-11767243-B2 · Sep 26, 2023 · US
Decontamination of Environmental Water Sources Using Living Engineered Biofilm Materials
US-2023295023-A1 · Sep 21, 2023 · US
Method for water treatment and recycling
US-2022298041-A1 · Sep 22, 2022 · US
Wastewater treatment apparatus and wastewater treatment method
US-2022242766-A1 · Aug 4, 2022 · US
Residential water treatment and recycle system
US-11396464-B2 · Jul 26, 2022 · US
Wastewater treatment device and wastewater treatment method
US-2022162099-A1 · May 26, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F3/101?
- CPC C02F3/101 is the Cooperative Patent Classification code for “Arranged-type packing, e.g. stacks, arrays.”
- How many patents are filed under CPC C02F3/101 (Arranged-type packing, e.g. stacks, arrays)?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC C02F3/101 growing?
- Publication counts under this code: 10 in 2024 vs 1 in 2025 (latest complete years).