Sodium hyaluronate with full molecular weight distribution (mwd), and preparation method and use thereof
US-2024002551-A1 · Jan 4, 2024 · US
Nanofiltration
Nanofiltration · 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 | B01D61/027 |
| Official title | {Nanofiltration} |
| Display label | Nanofiltration |
| Total patents | 891 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 41 |
| 2016 | 62 |
| 2017 | 73 |
| 2018 | 81 |
| 2019 | 84 |
| 2020 | 113 |
| 2021 | 81 |
| 2022 | 90 |
| 2023 | 74 |
| 2024 | 71 |
| 2025 | 89 |
| 2026 | 32 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Water purification system
US-2016361673-A1 · Dec 15, 2016 · US
Membranes comprising graphene
US-2016354729-A1 · Dec 8, 2016 · US
Composite membrane with multi-layered active layer
US-9504967-B2 · Nov 29, 2016 · US
Extraction of valuable components from cane vinasse
US-2016325232-A1 · Nov 10, 2016 · US
Hydrophilically modified fluorinated membrane (vi)
US-2016317982-A1 · Nov 3, 2016 · US
Membrane water treatment factility and method incorporating adsorption on an adsorbent powdered material and means for limiting the abrasion of the membranes
US-2016318777-A1 · Nov 3, 2016 · US
Separator
US-2016304358-A1 · Oct 20, 2016 · US
Polyacrylonitrile/chitosan composite nanofiltration membrane containing graphene oxide and preparation method thereof
US-2016303524-A1 · Oct 20, 2016 · US
Water treatment system and method
US-2016257576-A1 · Sep 8, 2016 · US
Novel nano-patterned thin film membranes and thin film composite membranes, and methods using same
US-2016214069-A1 · Jul 28, 2016 · US
Reverse-phase polymerisation process
US-2016159958-A1 · Jun 9, 2016 · US
Styrene-siloxane triblock copolymers as membranes for selective transport of alcohols and other organic compounds in aqueous mixtures
US-9346921-B2 · May 24, 2016 · US
Flux enhancing agent for improving composite polyamide reverse osmosis membrane performance
US-9346023-B2 · May 24, 2016 · US
Process for reducing inorganics from anionic surfactant solutions
US-9315404-B2 · Apr 19, 2016 · US
Super-surface selective nanomembranes providing simultaneous high permeation flux and high selectivity
US-9308501-B2 · Apr 12, 2016 · US
Method of separating lactic acid or salt thereof
US-2016096797-A1 · Apr 7, 2016 · US
Graphene nanotube array for gas filtration
US-9278318-B2 · Mar 8, 2016 · US
Water producing system and operation method therefor
US-9259686-B2 · Feb 16, 2016 · US
Compact spiral-wound filter elements, modules and systems
US-2015375173-A1 · Dec 31, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D61/027?
- CPC B01D61/027 is the Cooperative Patent Classification code for “Nanofiltration.”
- How many patents are filed under CPC B01D61/027 (Nanofiltration)?
- Our database includes 891 publications tagged with this CPC code.
- Is patent activity under CPC B01D61/027 growing?
- Publication counts under this code: 71 in 2024 vs 89 in 2025 (latest complete years).