Fabrication of large and polymer-free complex oxide and complex nitride membranes assisted by isolated metal islands
US-2026085447-A1 · Mar 26, 2026 · US
Use of magnetic or electrical fields
Use of magnetic or electrical fields · 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 | B01D2323/35 |
| Official title | Use of magnetic or electrical fields |
| Display label | Use of magnetic or electrical fields |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 9 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 7 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Water treatment system using a magnetic confinement method
US-2025353769-A1 · Nov 20, 2025 · US
Modular Membrane Materials for Separation Systems and Methods of Use thereof
US-2025269332-A1 · Aug 28, 2025 · US
Boron-nitride nanotube membranes
US-12201942-B2 · Jan 21, 2025 · US
Method of Manufacturing Semiconductor Devices Including The Steps of Removing One or More of the Nanotubes from the Stack of Nanotubes, and/or Removing Spacers that Surrounds Each of the Plurality of Nanotubes, and Forming Gate Dielectric and/or Gate Electrode to the Nanotubes
US-2024390861-A1 · Nov 28, 2024 · US
Method of manufacturing semiconductor devices including the steps of removing one or more of the nanotubes from the stack of nanotubes, and/or removing spacers that surrounds each of the plurality of nanotubes, and forming gate dielectric and/or gate electrode to the nanotubes
US-12151213-B2 · Nov 26, 2024 · US
Hydrophilic filter membrane with pendant hydrophilic groups, and related methods of preparation and use
US-2024382910-A1 · Nov 21, 2024 · US
Recyclable electret filtering membrane, preparation method therefor and cleaning and charge regeneration method therefor
US-2024342661-A1 · Oct 17, 2024 · US
Ultra-thin film of thermosetting resin
US-2024337026-A1 · Oct 10, 2024 · US
Graphene-based membrane and method of preparation thereof
US-11938451-B2 · Mar 26, 2024 · US
Pore forming method and pore forming apparatus
US-2024052507-A1 · Feb 15, 2024 · US
Method of Manufacturing Semiconductor Devices
US-2023360913-A1 · Nov 9, 2023 · US
Device for purifying fluid using ion concentration polarization phenomenon and purification system
US-11767241-B2 · Sep 26, 2023 · US
Method of manufacturing semiconductor devices including the steps of removing a plurality of spacers that surrounds each of the plurality of nanotubes into a layer of nanotubes, and forming gate dielectric and/or gate electrode
US-11749528-B2 · Sep 5, 2023 · US
Molecule Sensor Component and Method for Manufacturing Same
US-2023017101-A1 · Jan 19, 2023 · US
Semiconductor Devices and Methods of Manufacture
US-2022262635-A1 · Aug 18, 2022 · US
Semiconductor devices and methods of manufacture
US-11342181-B2 · May 24, 2022 · US
Super-hydrophilic, super-oleophobic membranes comprising carbohydrate derivatives
US-2022118410-A1 · Apr 21, 2022 · US
Method for preparing defect-free DDR molecular sieve membrane
US-11278846-B2 · Mar 22, 2022 · US
Method and apparatus for making a nanopore in a membrane using an electric field applied via a conductive tip
US-11224842-B2 · Jan 18, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2323/35?
- CPC B01D2323/35 is the Cooperative Patent Classification code for “Use of magnetic or electrical fields.”
- How many patents are filed under CPC B01D2323/35 (Use of magnetic or electrical fields)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC B01D2323/35 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).