Spacers for ion-exchange device
US-2024307797-A1 · Sep 19, 2024 · US
Stacks of the plate-and-frame type
Stacks of the plate-and-frame type · 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 | B01D61/50 |
| Official title | Stacks of the plate-and-frame type |
| Display label | Stacks of the plate-and-frame type |
| Total patents | 91 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 8 |
| 2019 | 7 |
| 2020 | 8 |
| 2021 | 8 |
| 2022 | 7 |
| 2023 | 14 |
| 2024 | 10 |
| 2025 | 9 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for separating solvent from a fluid
US-2023144024-A1 · May 11, 2023 · US
Membrane Stacks and Their Uses
US-2023100967-A1 · Mar 30, 2023 · US
Electrodialysis stack
US-2023017973-A1 · Jan 19, 2023 · US
Water production for coffee brewing by electrodeionization
US-11542183-B2 · Jan 3, 2023 · US
Fluid manifolds in electrodialysis devices
US-11511231-B2 · Nov 29, 2022 · US
Electrodialysis stack
US-11484839-B2 · Nov 1, 2022 · US
Cassette type electrodialysis unit and module comprising the same
US-2022203302-A1 · Jun 30, 2022 · US
Electrochemical compressor
US-2022205431-A1 · Jun 30, 2022 · US
Electrochemical compressor
US-2022178356-A1 · Jun 9, 2022 · US
Metal ion recovery device, metal recovery system, and metal ion recovery method
US-2022152556-A1 · May 19, 2022 · US
Methods and systems for wastewater treatment
US-2022112103-A1 · Apr 14, 2022 · US
Ion-exchange membrane having an imprinted non-woven substrate
US-2021394121-A1 · Dec 23, 2021 · US
Ion-exchange membrane having an imprinted non-woven substrate
US-11135551-B2 · Oct 5, 2021 · US
Water production for coffee brewing by electrodeionization
US-2021155508-A1 · May 27, 2021 · US
Desalination
US-11014049-B2 · May 25, 2021 · US
Bipolar electrodialysis methods and systems
US-10946341-B2 · Mar 16, 2021 · US
Electrodialysis device for the desalination of water for oil and gas applications
US-2021069646-A1 · Mar 11, 2021 · US
Multi-stage bipolar electrodialysis system for high concentration acid or base production
US-2021069645-A1 · Mar 11, 2021 · US
Design of Fluid Manifolds in Electrodialysis Devices
US-2021001276-A1 · Jan 7, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D61/50?
- CPC B01D61/50 is the Cooperative Patent Classification code for “Stacks of the plate-and-frame type.”
- How many patents are filed under CPC B01D61/50 (Stacks of the plate-and-frame type)?
- Our database includes 91 publications tagged with this CPC code.
- Is patent activity under CPC B01D61/50 growing?
- Publication counts under this code: 10 in 2024 vs 9 in 2025 (latest complete years).