Formed filter media
US-12569797-B2 · Mar 10, 2026 · US
Cell-type stack filters
Cell-type stack filters · 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 | B01D25/26 |
| Official title | Cell-type stack filters |
| Display label | Cell-type stack filters |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid filtration apparatuses, systems, and methods
US-12409397-B2 · Sep 9, 2025 · US
Uniform spray-coating, cumulatively-stacking and squeezing solid-liquid separation system
US-2025205619-A1 · Jun 26, 2025 · US
Filter disk segments
US-12220657-B2 · Feb 11, 2025 · US
Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US-12048888-B2 · Jul 30, 2024 · US
Filtering unit with improved cover assembly
US-11801460-B2 · Oct 31, 2023 · US
Filter press adapter
US-2023219019-A1 · Jul 13, 2023 · US
Formed filter media
US-2023018748-A1 · Jan 19, 2023 · US
Filter disk segments
US-2022347603-A1 · Nov 3, 2022 · US
Filtering unit with improved cover assembly
US-2022331715-A1 · Oct 20, 2022 · US
Pleated filtration media having tapered flutes
US-11413563-B2 · Aug 16, 2022 · US
Filter assemblies utilizing full cross-section
US-2022118386-A1 · Apr 21, 2022 · US
Fluid filtration apparatuses, systems, and methods
US-2021354059-A1 · Nov 18, 2021 · US
Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US-2021268408-A1 · Sep 2, 2021 · US
Filter element and filter comprising at least two filter elements
US-10960327-B2 · Mar 30, 2021 · US
Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US-10946313-B2 · Mar 16, 2021 · US
Structures for normalizing multi-planar flow distribution within an electrochemical separation system
US-10814280-B2 · Oct 27, 2020 · US
Membrane stack and method for making the same
US-10780399-B2 · Sep 22, 2020 · US
Filtering unit with automatic backwashing
US-10688414-B2 · Jun 23, 2020 · US
Filtration module and method for producing same
US-10589194-B2 · Mar 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D25/26?
- CPC B01D25/26 is the Cooperative Patent Classification code for “Cell-type stack filters.”
- How many patents are filed under CPC B01D25/26 (Cell-type stack filters)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC B01D25/26 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).