Filter plate subframe
US-12440784-B2 · Oct 14, 2025 · US
Filter presses, i.e. of the plate or plate and frame type
Filter presses, i.e. of the plate or 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 | B01D25/12 |
| Official title | Filter presses, i.e. of the plate or plate and frame type |
| Display label | Filter presses, i.e. of the plate or plate and frame type |
| Total patents | 55 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter diaphragm for a horizontal plate and frame-type filter, such as a tower press
US-12434176-B2 · Oct 7, 2025 · US
Method for upgrading coal slime through synergistic dehydration
US-12428606-B2 · Sep 30, 2025 · US
Method of preparing nickel sulfate salt
US-2025296850-A1 · Sep 25, 2025 · US
Filter aid, method of filtration treatment, and method of manufacturing cellulase
US-2025179459-A1 · Jun 5, 2025 · US
Method for upgrading coal slime through synergistic dehydration
US-2025171701-A1 · May 29, 2025 · US
Filter press and a filter plate compression and transport retrofitting kit for a filter press
US-12303808-B2 · May 20, 2025 · US
Plate detection apparatus for filter presses
US-2025099881-A1 · Mar 27, 2025 · US
Process for separating plant oil from one or more biorefinery process compositions, and related compositions and systems
US-2025066685-A1 · Feb 27, 2025 · US
Method and system for refining long chain dicarboxylic acid
US-12017182-B2 · Jun 25, 2024 · US
A filter plate assembly for a filter press, and such a filter press
US-2024109007-A1 · Apr 4, 2024 · US
Filtrate vat assembly for a filter press
US-2024033661-A1 · Feb 1, 2024 · US
A filter plate subframe
US-2024009597-A1 · Jan 11, 2024 · US
Arrangement and method for controlling pressure filter
US-2023398472-A1 · Dec 14, 2023 · US
A grid and a vat for a filtrate vat assembly of a vertical filter press
US-2023364531-A1 · Nov 16, 2023 · US
Electrode catalyst production system and production method
US-2023216063-A1 · Jul 6, 2023 · US
Electrode catalyst production system and production method
US-2023079500-A1 · Mar 16, 2023 · US
A filter diaphragm for a horizontal plate and frame-type filter, such as a tower press
US-2023043237-A1 · Feb 9, 2023 · US
A filter press and a filter plate compression and transport retrofitting kit for a filter press
US-2023032206-A1 · Feb 2, 2023 · US
Manual filter press with displaceable follower stop
US-11390549-B2 · Jul 19, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D25/12?
- CPC B01D25/12 is the Cooperative Patent Classification code for “Filter presses, i.e. of the plate or plate and frame type.”
- How many patents are filed under CPC B01D25/12 (Filter presses, i.e. of the plate or plate and frame type)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC B01D25/12 growing?
- Publication counts under this code: 4 in 2024 vs 9 in 2025 (latest complete years).