Filter diaphragm for a recessed plate-type filter, a diaphragm filter plate, a diaphragm filter plate assembly and a recessed plate-type filter
US-12447422-B2 · Oct 21, 2025 · US
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by compression using inflatable membranes
by compression using inflatable membranes · 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 | B01D25/285 |
| Official title | {by compression using inflatable membranes} |
| Display label | by compression using inflatable membranes |
| Total patents | 16 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 1 |
| 2023 | 5 |
| 2024 | 1 |
| 2025 | 2 |
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
A filter plate assembly for a filter press, and such a filter press
US-2024109007-A1 · Apr 4, 2024 · US
Arrangement and method for controlling pressure filter
US-2023398472-A1 · Dec 14, 2023 · US
A filter diaphragm for a recessed plate -type filter, a diaphragm filter plate, a diaphragm filter plate assembly and a recessed plate -type filter
US-2023064222-A1 · Mar 2, 2023 · US
A filter plate frame assembly and a horizontal filter press, such as a tower press, having such a plate frame assembly
US-2023048289-A1 · Feb 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 plate frame assembly, a horizontal filter press, such as a tower press, having such a plate frame assembly, and a method of replacing worn components of horizontal filter press
US-2023023076-A1 · Jan 26, 2023 · US
Sludge dewatering device
US-11021385-B2 · Jun 1, 2021 · US
Method for operating a filter press and a filter press
US-2020330903-A1 · Oct 22, 2020 · US
Method for operating a filter press and a filter press
US-10737200-B2 · Aug 11, 2020 · US
Method for operating a filter press and a filter press
US-2020179830-A1 · Jun 11, 2020 · US
Method for manufacturing a recess plate
US-10391426-B2 · Aug 27, 2019 · US
Sludge dewatering device
US-2018297881-A1 · Oct 18, 2018 · US
Method for manufacturing a recess plate
US-2017282098-A1 · Oct 5, 2017 · US
Method for sealing a filter chamber and filter device
US-2015108072-A1 · Apr 23, 2015 · US