Porous membranes for high pressure filtration
US-12064731-B2 · Aug 20, 2024 · US
Pore size
Pore size · 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 | B01D2325/0283 |
| Official title | Pore size |
| Display label | Pore size |
| Total patents | 669 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 33 |
| 2016 | 42 |
| 2017 | 39 |
| 2018 | 36 |
| 2019 | 71 |
| 2020 | 99 |
| 2021 | 93 |
| 2022 | 76 |
| 2023 | 47 |
| 2024 | 74 |
| 2025 | 49 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Porous medium with adjustable fluid permeability and associated systems and methods
US-11872525-B2 · Jan 16, 2024 · US
Treated mixed matrix polymeric membranes
US-9522364-B2 · Dec 20, 2016 · US
Hydrophilic-oleophobic copolymer composition and uses thereof
US-9517952-B2 · Dec 13, 2016 · US
Tannin-based polymer as filter aid for reducing fouling in filtration of high tds water
US-2016347631-A1 · Dec 1, 2016 · US
Composite membranes and methods of use
US-2016325229-A1 · Nov 10, 2016 · US
Porous hollow fiber membrane, method for producing same, and water purification method
US-2016325237-A1 · Nov 10, 2016 · US
Porous membranes with multiple zones having different pore sizes
US-2016317976-A1 · Nov 3, 2016 · US
Zwitterion-containing membranes
US-2016303523-A1 · Oct 20, 2016 · US
Cellulose hydrate membrane, method for the production thereof, and use thereof
US-9433904-B2 · Sep 6, 2016 · US
Coatings for biological fluid filters
US-2016236152-A1 · Aug 18, 2016 · US
Asymmetric membranes
US-9415347-B2 · Aug 16, 2016 · US
Method for manufacturing electrically conductive separation membrane for water treatment, separation membrane manufactured thereby, and water treatment method using same separation membrane
US-2016199786-A1 · Jul 14, 2016 · US
Mesostructured polymer membranes and other articles
US-2016193385-A1 · Jul 7, 2016 · US
Membrane and method of manufacturing the same
US-2016136586-A1 · May 19, 2016 · US
Charged porous polymeric membrane with high void volume
US-9302228-B2 · Apr 5, 2016 · US
Substrate for liquid filter
US-2016082397-A1 · Mar 24, 2016 · US
Substrate for liquid filter
US-2016082398-A1 · Mar 24, 2016 · US
Porous membrane and water purifier
US-2016052804-A1 · Feb 25, 2016 · US
Membrane with localized asymmetries
US-9266066-B2 · Feb 23, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2325/0283?
- CPC B01D2325/0283 is the Cooperative Patent Classification code for “Pore size.”
- How many patents are filed under CPC B01D2325/0283 (Pore size)?
- Our database includes 669 publications tagged with this CPC code.
- Is patent activity under CPC B01D2325/0283 growing?
- Publication counts under this code: 74 in 2024 vs 49 in 2025 (latest complete years).