Membranes for gas separation
US-12023633-B2 · Jul 2, 2024 · US
Operations & Transport
Operations & Transport · 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 | B01D71/82 |
| Official title | — |
| Display label | Operations & Transport (mapped technology topic) |
| Total patents | 698 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 59 |
| 2016 | 55 |
| 2017 | 69 |
| 2018 | 47 |
| 2019 | 51 |
| 2020 | 69 |
| 2021 | 71 |
| 2022 | 58 |
| 2023 | 73 |
| 2024 | 70 |
| 2025 | 64 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of fabricating nanoporous organic-inorganic hybird film and nanoporous organic-inorganic hybird film manufactured by the method and nanoporous membrane employing the nanoporous organic-inorganic hybird film
US-2015375175-A1 · Dec 31, 2015 · US
Stepwise Interfacial Polymerization Technique with Different Reagent Solution Designs to Prepare Hollow Fiber Nanofiltration Membrane Composites
US-2015367293-A1 · Dec 24, 2015 · US
Porous polymer membrane with covalent network structure and production method thereof
US-9216389-B2 · Dec 22, 2015 · US
Functional polymer membrane, manufacturing method therefor, ion exchange membrane and proton conductive membrane equipped with functional polymer membrane, and ion exchange device
US-2015353696-A1 · Dec 10, 2015 · US
Curable Compositions and Membranes
US-2015343389-A1 · Dec 3, 2015 · US
Ultrafiltration membranes fabricated from sulfonated polyphenylenesulfones
US-9199205-B2 · Dec 1, 2015 · US
Composite membranes comprising a sulfonated polyarylether and their use in forward osmosis processes
US-9193611-B2 · Nov 24, 2015 · US
Electrospinning Solution, Polyvinyl Alcohol Nanofibers and Ion-Exchange Membrane
US-2015328631-A1 · Nov 19, 2015 · US
Zwitterion-functionalized block copolymer membranes and associated block copolymer composition
US-2015328597-A1 · Nov 19, 2015 · US
Polyaryl Ether Polymers End-Capped with Phenolic Amino Acids
US-2015322210-A1 · Nov 12, 2015 · US
Composite polyamide membrane made via interfacial polymerization using a blend of non-polar solvents
US-2015306548-A1 · Oct 29, 2015 · US
Composite Gas Separation Membranes with Dialkysiloxane Intermediate Layer
US-2015298071-A1 · Oct 22, 2015 · US
Block copolymers, their manufacture and their use
US-2015290637-A1 · Oct 15, 2015 · US
Solvent resistant polymeric membranes
US-2015291843-A1 · Oct 15, 2015 · US
Drying substances, preparation and use thereof
US-2015283519-A1 · Oct 8, 2015 · US
Gas separation composite membrane, gas separation module, gas separation apparatus, gas separation method, and method of producing gas separation composite membrane
US-2015265964-A1 · Sep 24, 2015 · US
Copolymers comprising phosphonate and/or phosphonic acid groups, usable for forming fuel cell membranes
US-9138691-B2 · Sep 22, 2015 · US
Vinyl alcohol-based graft polymer, method for producing same, and ion-exchange membrane using same
US-2015259457-A1 · Sep 17, 2015 · US
Functional polymer membrane and method of producing the same
US-2015259227-A1 · Sep 17, 2015 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/82?
- CPC B01D71/82 is the Cooperative Patent Classification code for “Operations & Transport.”
- How many patents are filed under CPC B01D71/82 (Operations & Transport)?
- Our database includes 698 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/82 growing?
- Publication counts under this code: 70 in 2024 vs 64 in 2025 (latest complete years).