Membranes for gas separation
US-12023633-B2 · Jul 2, 2024 · US
Details of membrane preparation apparatus
Details of membrane preparation apparatus · 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 | B01D2323/42 |
| Official title | Details of membrane preparation apparatus |
| Display label | Details of membrane preparation apparatus |
| Total patents | 299 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 42 |
| 2016 | 36 |
| 2017 | 32 |
| 2018 | 34 |
| 2019 | 25 |
| 2020 | 22 |
| 2021 | 29 |
| 2022 | 20 |
| 2023 | 18 |
| 2024 | 20 |
| 2025 | 14 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing porous membrane and drying device of porous membrane
US-9528760-B2 · Dec 27, 2016 · US
Deformed porous hollow fiber membrane, production method of deformed porous hollow fiber membrane, and module, filtration device, and water treatment method in which deformed porous hollow fiber membrane is used
US-9511529-B2 · Dec 6, 2016 · US
Melt processable poly(vinyl alcohol) blends and poly(vinyl alcohol) based membranes
US-9486746-B2 · Nov 8, 2016 · US
Porous membranes with multiple zones having different pore sizes
US-2016317976-A1 · Nov 3, 2016 · US
Filtration method using polyimide nanoweb with amidized surface and apparatus therefor
US-9475009-B2 · Oct 25, 2016 · US
Dendrimer particles and related mixed matrix filtration membranes, compositions, methods, and systems
US-2016303517-A1 · Oct 20, 2016 · US
Surface-modified fluoropolymer membrane
US-2016271568-A1 · Sep 22, 2016 · US
Surface-modified fluoropolymer membrane
US-9427709-B2 · Aug 30, 2016 · US
Asymmetric membranes
US-9415347-B2 · Aug 16, 2016 · US
Apparatus and method for manufacturing fiber bundles
US-9387945-B2 · Jul 12, 2016 · US
Method for the production of polymeric membranes having an ordered arrangement of high-aspect-ratio nanopores, by means of heavy ion bombing
US-9376538-B2 · Jun 28, 2016 · US
Method and apparatus for fabricating separator assembly
US-2016090514-A1 · Mar 31, 2016 · US
Microperforated polymeric film and methods of making and using the same
US-2016045846-A1 · Feb 18, 2016 · US
Porous film manufacturing method and apparatus
US-2016038883-A1 · Feb 11, 2016 · US
Method of producing composite for acid gas separation
US-2016008768-A1 · Jan 14, 2016 · US
Method of producing composite for acid gas separation and apparatus for producing same
US-2016008764-A1 · Jan 14, 2016 · US
Formation and encapsulation of molecular bilayer and monolayer membranes
US-9233846-B2 · Jan 12, 2016 · US
Filter media for a liquid filter using an electrospun nanofiber web, method for manufacturing same, and liquid filter using same
US-9220998-B2 · Dec 29, 2015 · US
Method to make yarn-reinforced hollow fiber membranes around a soluble core
US-9221020-B2 · Dec 29, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2323/42?
- CPC B01D2323/42 is the Cooperative Patent Classification code for “Details of membrane preparation apparatus.”
- How many patents are filed under CPC B01D2323/42 (Details of membrane preparation apparatus)?
- Our database includes 299 publications tagged with this CPC code.
- Is patent activity under CPC B01D2323/42 growing?
- Publication counts under this code: 20 in 2024 vs 14 in 2025 (latest complete years).