Crosslinked ion-exchange materials, related methods, and related articles
US-2024050906-A1 · Feb 15, 2024 · US
Polyalkenes
Polyalkenes · 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 | B01D71/26 |
| Official title | Polyalkenes |
| Display label | Polyalkenes |
| Total patents | 444 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 27 |
| 2016 | 30 |
| 2017 | 45 |
| 2018 | 34 |
| 2019 | 43 |
| 2020 | 60 |
| 2021 | 68 |
| 2022 | 40 |
| 2023 | 39 |
| 2024 | 28 |
| 2025 | 21 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Microporous polymeric membranes, battery separators, and production methods therefor
US-9744500-B2 · Aug 29, 2017 · US
Fluid degassing apparatus
US-9656186-B2 · May 23, 2017 · US
Multiblock copolymer films, methods of making same, and uses thereof
US-9527041-B2 · Dec 27, 2016 · US
Method of removing hydrogen-sulfide from water
US-2016355414-A1 · Dec 8, 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
Membrane assisted solvent extraction for rare earth element recovery
US-2016346736-A1 · Dec 1, 2016 · US
Nanoparticle and gelation stabilized functional composites of an ionic salt in a hydrophobic polymer matrix
US-9499715-B2 · Nov 22, 2016 · US
Microscopically structured polymer monoliths and fabrication methods
US-9494865-B2 · Nov 15, 2016 · US
Multilayer, microporous polyolefin membrane and battery separator
US-2016329609-A1 · Nov 10, 2016 · US
Composite hollow fiber membrane and manufacturing method thereof
US-2016325236-A1 · Nov 10, 2016 · US
Method for Preparing a Resin-Treated Microporous Membrane
US-2016317974-A1 · Nov 3, 2016 · US
Cycloalkylnorbornene monomers, polymers derived therefrom and their use in pervaporation
US-9468890-B2 · Oct 18, 2016 · US
Hydrophilically modified fluorinated membrane (v)
US-2016288060-A1 · Oct 6, 2016 · US
Radial filtration vent and medical device packaging
US-9427710-B2 · Aug 30, 2016 · US
Multi-layer microporous polyolefin membrane and battery separator
US-9431642-B2 · Aug 30, 2016 · US
Coatings for biological fluid filters
US-2016236152-A1 · Aug 18, 2016 · US
Treated filter
US-2016228825-A1 · Aug 11, 2016 · US
Curable Compositions and Membranes
US-2016207008-A1 · Jul 21, 2016 · US
Method of forming a hydrophilic membrane
US-9393529-B2 · Jul 19, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/26?
- CPC B01D71/26 is the Cooperative Patent Classification code for “Polyalkenes.”
- How many patents are filed under CPC B01D71/26 (Polyalkenes)?
- Our database includes 444 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/26 growing?
- Publication counts under this code: 28 in 2024 vs 21 in 2025 (latest complete years).