Method and installation for controlled microbiome shift for biomass densification in a biological treatment of a raw influent
US-2023365446-A1 · Nov 16, 2023 · US
Permeable membranes
Permeable membranes · 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 | C02F3/102 |
| Official title | {Permeable membranes} |
| Display label | Permeable membranes |
| Total patents | 83 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 6 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 10 |
| 2021 | 10 |
| 2022 | 8 |
| 2023 | 14 |
| 2024 | 11 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Membrane assembly for supporting a biofilm
US-2023331605-A1 · Oct 19, 2023 · US
System and method for efficient nitrogen and carbon removal and phosphorus recovery of source-separated fresh urine by biochemical combination
US-2023312382-A1 · Oct 5, 2023 · US
Membrane assembly for supporting a biofilm
US-11724947-B2 · Aug 15, 2023 · US
Wastewater treatment systems and methods of use
US-2023219833-A1 · Jul 13, 2023 · US
Method for denitration of flue gas
US-2023201767-A1 · Jun 29, 2023 · US
Device for converting biomass to reduced mediator, system for converting biomass to dihydrogen comprising it, and associated method
US-2023123627-A1 · Apr 20, 2023 · US
Process and apparatus for nitritation using membrane aerated biofilm reactor
US-2023079372-A1 · Mar 16, 2023 · US
Microbe-based systems, compositions, and methods thereof
US-2023046027-A1 · Feb 16, 2023 · US
Floating apparatus for membrane biofilm reactor and process for water treatment
US-2023045679-A1 · Feb 9, 2023 · US
Systems for catalytically removing per- and polyfluoroalkyl substances from a fluid and related methods
US-2023002263-A1 · Jan 5, 2023 · US
Permeable reactive barrier
US-11541439-B2 · Jan 3, 2023 · US
Method for determining optimal preservation temperature of anaerobic ammonium oxidation biofilm in wastewater treatment for total nitrogen removal
US-11513053-B2 · Nov 29, 2022 · US
Intelligent circulation and allocation control system for multiple surface and ground water resources
US-2022373987-A1 · Nov 24, 2022 · US
Process for water treatment using membrane biofilm reactor
US-11505483-B2 · Nov 22, 2022 · US
Permeable reactive barrier
US-2022347729-A1 · Nov 3, 2022 · US
Aerobic biological treatment apparatus
US-11459252-B2 · Oct 4, 2022 · US
Device for Removing Nitrogen and Carbon Using Microporous Aerated Biofilms
US-2022242764-A1 · Aug 4, 2022 · US
Method and device for preventing and controlling pollutants in the reuse of reclaimed water in agricultural activity areas with extreme water shortage
US-11352281-B2 · Jun 7, 2022 · US
Method and device for preventing and controlling pollutants in basin water resource utilization
US-11230485-B2 · Jan 25, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F3/102?
- CPC C02F3/102 is the Cooperative Patent Classification code for “Permeable membranes.”
- How many patents are filed under CPC C02F3/102 (Permeable membranes)?
- Our database includes 83 publications tagged with this CPC code.
- Is patent activity under CPC C02F3/102 growing?
- Publication counts under this code: 11 in 2024 vs 8 in 2025 (latest complete years).