B01D 25/12
Filter presses, i.e. of the plate or plate and frame type
B01D25/12 (Filter presses, i.e. of the plate or plate and frame type) appears on 465 US grants and 270 published applications in this corpus.
Search patents in B01D- Granted patents
- 465
- Published applications
- 270
- Assignees
- 246
- Inventors
- 738
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 14 | 0 |
| 1979 | 14 | 0 |
| 1980 | 18 | 0 |
| 1981 | 13 | 0 |
| 1982 | 13 | 0 |
| 1983 | 7 | 0 |
| 1984 | 12 | 0 |
| 1985 | 8 | 0 |
| 1986 | 14 | 0 |
| 1987 | 11 | 0 |
| 1988 | 16 | 0 |
| 1989 | 19 | 0 |
| 1990 | 13 | 0 |
| 1991 | 14 | 0 |
| 1992 | 14 | 0 |
| 1993 | 10 | 0 |
| 1994 | 13 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 5 | 1 |
| 2002 | 6 | 3 |
| 2003 | 3 | 3 |
| 2004 | 4 | 7 |
| 2005 | 6 | 7 |
| 2006 | 2 | 6 |
| 2007 | 3 | 9 |
| 2008 | 2 | 10 |
| 2009 | 4 | 4 |
| 2010 | 2 | 11 |
| 2011 | 6 | 4 |
| 2012 | 4 | 5 |
| 2013 | 8 | 10 |
| 2014 | 4 | 12 |
| 2015 | 6 | 19 |
| 2016 | 10 | 8 |
| 2017 | 10 | 13 |
| 2018 | 7 | 9 |
| 2019 | 6 | 18 |
| 2020 | 13 | 18 |
| 2021 | 14 | 13 |
| 2022 | 14 | 15 |
| 2023 | 7 | 19 |
| 2024 | 8 | 13 |
| 2025 | 14 | 16 |
| 2026 | 12 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 25/21Plate and frame presses175
- B01D 25/164Chamber-plate presses, i.e. the sides of the filtering elements being clamped between128
- B01D 25/172Plate spreading means98
- B01D 25/127With one or more movable filter bands arranged to be clamped between95
- B01D 25/19Clamping means for closing the filter press47
- B01D 25/176Attaching the filter element to the filter press plates45
Recent patents
- Rejector cartridge11 Aug 2026US 12,702,939 B2Evoqua Water Technologies LLC
- Filter plate7 Jul 2026US 12,673,277 B2JVK Filtration Systems GmbH
- Filter press adapter12 May 2026US 12,623,164 B2Takeda Pharmaceutical Company Limited
- Filter plate assembly for a horizontal plate and frame-type filter, such as a tower press, a filter plate and a vat liner12 May 2026US 12,623,165 B2Metso Finland Oy
- Sealing strip for sealing adjacent filter plate assemblies of a filter press, such as a tower press, a filter frame, a filter frame assembly and a filter apparatus5 May 2026US 12,616,923 B2Metso Finland Oy
- Loss-free process for producing cathode active material without generating waste and wastewater24 Sep 2026US 2026/0285703 A1
- Industrial Filter Cloth3 Sep 2026US 2026/0257155 A1Valmet Technologies Oy
- A filter plate assembly for a horizontal plate and frame-type filter, such as a tower press, a filter plate and a vat liner20 Aug 2026US 2026/0241310 A1Metso Finland Oy
- Apparatus and process for recovery of a valuable material13 Aug 2026US 2026/0233129 A1Evonik Operations GmbH
- Retention apparatus for membrane chromatography units30 Jul 2026US 2026/0216620 A1Cytiva BioProcess R&D AB
Most cited
By later US patents
- Filter plate, filter plate element, and filter comprising same74US 4,882,050 A1989
- Filter plate, filter plate element, and filter comprising same73US 4,867,876 A1989
- Filtration cassette article, and filter comprising same73US 5,342,517 A1994
- Filter plate, filter plate element, and filter comprising same72US 5,034,124 A1991
- Filter plate, filter plate element, and filter comprising same61US 5,049,268 A1991