Methods and systems for treating phosphogypsum-containing water
US-12479748-B2 · Nov 25, 2025 · US
comprising multiple electrodialysis steps
comprising multiple electrodialysis steps · 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 | B01D61/423 |
| Official title | {comprising multiple electrodialysis steps} |
| Display label | comprising multiple electrodialysis steps |
| Total patents | 63 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 11 |
| 2022 | 5 |
| 2023 | 9 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Water treatment system and water treatment method
US-2025346514-A1 · Nov 13, 2025 · US
Microflow synthesis unit
US-2025269329-A1 · Aug 28, 2025 · US
Simplified architecture for desalination via electrodialysis
US-12397263-B2 · Aug 26, 2025 · US
Multi-stage bipolar electrodialysis system for high concentration acid or base production
US-12257551-B2 · Mar 25, 2025 · US
Fluid manifolds in electrodialysis devices
US-12070722-B2 · Aug 27, 2024 · US
Nanofiltration pretreatment of seawater for electrodialysis desalination
US-2024228352-A1 · Jul 11, 2024 · US
Devices for urea electrolysis and methods of using same
US-2024165309-A1 · May 23, 2024 · US
Tandem electrodialysis cell systems based on the use of redox couples
US-11964885-B2 · Apr 23, 2024 · US
Algae cultivation systems and methods related thereto
US-11945736-B2 · Apr 2, 2024 · US
Devices for urea electrolysis and methods of using same
US-11925737-B2 · Mar 12, 2024 · US
Method for extracting and purifying Dendrobium officinale polysaccharides
US-11780936-B2 · Oct 10, 2023 · US
Carbon dioxide electrolytic device and method of controlling carbon dioxide electrolytic device
US-2023295812-A1 · Sep 21, 2023 · US
Method for recovering active metal of lithium secondary battery
US-2023250507-A1 · Aug 10, 2023 · US
Simplified Architecture for Desalination via Electrodialysis
US-2023241554-A1 · Aug 3, 2023 · US
Design of Fluid Manifolds in Electrodialysis Devices
US-2023201775-A1 · Jun 29, 2023 · US
A graphene oxide-based membrane
US-2023201776-A1 · Jun 29, 2023 · US
Dryer using electrochemical regenerated liquid desiccant
US-2023173433-A1 · Jun 8, 2023 · US
Electrochemical desalination system
US-11648506-B2 · May 16, 2023 · US
Tubular electrochemical separation unit and manufacturing method therefor
US-2023012017-A1 · Jan 12, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D61/423?
- CPC B01D61/423 is the Cooperative Patent Classification code for “comprising multiple electrodialysis steps.”
- How many patents are filed under CPC B01D61/423 (comprising multiple electrodialysis steps)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC B01D61/423 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).