Anion-exchange membrane and manufacturing method therefor
US-2026021451-A1 · Jan 22, 2026 · US
Membrane capacitive deionization
Membrane capacitive deionization · 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 | B01D61/428 |
| Official title | {Membrane capacitive deionization} |
| Display label | Membrane capacitive deionization |
| Total patents | 62 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 7 |
| 2020 | 3 |
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 11 |
| 2024 | 6 |
| 2025 | 9 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ratchet-based ion pumping membrane systems
US-12528052-B2 · Jan 20, 2026 · US
Electrochemical water deionization separators
US-12503380-B2 · Dec 23, 2025 · US
Mobile medical fluid generation system
US-12485211-B2 · Dec 2, 2025 · US
Capacitive deionization filter and method for manufacturing the same
US-2025332545-A1 · Oct 30, 2025 · US
Water softening intercalation materials
US-12381287-B2 · Aug 5, 2025 · US
Chemical free extraction of lithium from brine
US-2025230074-A1 · Jul 17, 2025 · US
Fluid Purification Methods, Devices, and Systems
US-2025122103-A1 · Apr 17, 2025 · US
Surface modified membranes
US-12251693-B2 · Mar 18, 2025 · US
Continuous separation of radionuclides by shock electrodialysis
US-12237091-B2 · Feb 25, 2025 · US
Water deionization cells
US-12195366-B2 · Jan 14, 2025 · US
Fluid purification methods, devices, and systems
US-12180096-B2 · Dec 31, 2024 · US
Hybrid water treatment system for red tide removal and perchlorate control and water treatment method using the same
US-2024343617-A1 · Oct 17, 2024 · US
Desalination device
US-2024294408-A1 · Sep 5, 2024 · US
Cross current staged reverse osmosis
US-12065370-B2 · Aug 20, 2024 · US
Cross current staged reverse osmosis
US-11999643-B2 · Jun 4, 2024 · US
Method of fabricating and operating water-permeable capacitive deionization electrode capable of selectively absorbing and desorbing sodium ions using NASICON-incorporated carbon nanotube structure
US-11975295-B2 · May 7, 2024 · US
Mobile medical fluid generation system
US-2023381389-A1 · Nov 30, 2023 · US
Voltage-controlled anion exchange membrane enabling selective ion affinities for water desalination and device containing the same
US-11820681-B2 · Nov 21, 2023 · US
Flow-electrode cartridge unit and submerged flow-electrode capacitive deionization device using same
US-2023201773-A1 · Jun 29, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D61/428?
- CPC B01D61/428 is the Cooperative Patent Classification code for “Membrane capacitive deionization.”
- How many patents are filed under CPC B01D61/428 (Membrane capacitive deionization)?
- Our database includes 62 publications tagged with this CPC code.
- Is patent activity under CPC B01D61/428 growing?
- Publication counts under this code: 6 in 2024 vs 9 in 2025 (latest complete years).