Carbon-doped membranes, methods of making same, and uses thereof
US-2025303368-A1 · Oct 2, 2025 · US
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01D71/00 |
| Official title | Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor |
| Display label | Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 7 |
| 2018 | 6 |
| 2019 | 7 |
| 2020 | 6 |
| 2021 | 2 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for preparing ceramic fiber filter tubes with high air permeability
US-12397265-B2 · Aug 26, 2025 · US
Methods for preparing ceramic fiber filter tubes with high air permeability
US-2025153113-A1 · May 15, 2025 · US
Membrane made of a blend of uhmw polyolefins
US-2025105340-A1 · Mar 27, 2025 · US
Tubular fiber membrane for material exchange and method of making same
US-12220663-B2 · Feb 11, 2025 · US
Membrane made of a blend of UHMW polyolefins
US-12166166-B2 · Dec 10, 2024 · US
Methane-selective mixed matrix membranes including nanoporous metal-organic framework materials to which a methane-selective functional group is introduced, the use thereof, and a method of preparing the same
US-11684890-B2 · Jun 27, 2023 · US
Medical material, medical separation membrane, and blood purifier
US-10912868-B2 · Feb 9, 2021 · US
Membrane made of a blend of uhmw polyolefins
US-2021013477-A1 · Jan 14, 2021 · US
Methane-selective mixed matrix membranes including nanoporous metal-organic framework materials to which methane-selective functional group,is introduced the use thereof and a method of preparing the same
US-2020306689-A1 · Oct 1, 2020 · US
Membrane made of a blend of UHMW polyolefins
US-10790491-B2 · Sep 29, 2020 · US
Hybrid type filtration structure for filtering liquid
US-10717052-B2 · Jul 21, 2020 · US
Membrane made of a blend of UHMW polyolefins
US-10615388-B2 · Apr 7, 2020 · US
Fabrication of highly CO2 selective metal-organic framework membrane using liquid phase epitaxy approach
US-10569231-B2 · Feb 25, 2020 · US
Film comprising graphene oxide and clay, preparation method therefor, and use thereof as oxygen barrier film
US-10547032-B2 · Jan 28, 2020 · US
Fabrication of highly co2 selective metal-organic framework membrane using liquid phase epitaxy approach
US-2019388846-A1 · Dec 26, 2019 · US
Fabrication of highly CO2 selective metal-organic framework membrane using liquid phase epitaxy approach
US-10441924-B2 · Oct 15, 2019 · US
Oxygen separation membrane
US-2019291046-A1 · Sep 26, 2019 · US
Separation method and separation apparatus
US-10407367-B2 · Sep 10, 2019 · US
Medical material, medical separation membrane, and blood purifier
US-2019209744-A1 · Jul 11, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/00?
- CPC B01D71/00 is the Cooperative Patent Classification code for “Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor.”
- How many patents are filed under CPC B01D71/00 (Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/00 growing?
- Publication counts under this code: 1 in 2024 vs 5 in 2025 (latest complete years).