B01D 25/00
Filters formed by clamping together several filtering elements or parts of such
Official title: Filters formed by clamping together several filtering elements or parts of such elements (disc filters B01D29/39)
B01D25/00 (Filters formed by clamping together several filtering elements or parts of such) appears on 796 US grants and 491 published applications in this corpus.
Search patents in B01D- Granted patents
- 796
- Published applications
- 491
- Assignees
- 408
- Inventors
- 1,335
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 13 | 0 |
| 1978 | 20 | 0 |
| 1979 | 16 | 0 |
| 1980 | 22 | 0 |
| 1981 | 26 | 0 |
| 1982 | 20 | 0 |
| 1983 | 16 | 0 |
| 1984 | 18 | 0 |
| 1985 | 17 | 0 |
| 1986 | 20 | 0 |
| 1987 | 22 | 0 |
| 1988 | 22 | 0 |
| 1989 | 25 | 0 |
| 1990 | 23 | 0 |
| 1991 | 24 | 0 |
| 1992 | 24 | 0 |
| 1993 | 16 | 0 |
| 1994 | 16 | 0 |
| 1995 | 10 | 0 |
| 1996 | 13 | 0 |
| 1997 | 11 | 0 |
| 1998 | 23 | 0 |
| 1999 | 11 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 4 |
| 2002 | 11 | 9 |
| 2003 | 7 | 12 |
| 2004 | 7 | 12 |
| 2005 | 10 | 20 |
| 2006 | 4 | 16 |
| 2007 | 8 | 14 |
| 2008 | 4 | 30 |
| 2009 | 6 | 7 |
| 2010 | 10 | 28 |
| 2011 | 17 | 14 |
| 2012 | 13 | 14 |
| 2013 | 17 | 21 |
| 2014 | 11 | 19 |
| 2015 | 15 | 25 |
| 2016 | 15 | 11 |
| 2017 | 17 | 20 |
| 2018 | 15 | 21 |
| 2019 | 15 | 27 |
| 2020 | 26 | 25 |
| 2021 | 21 | 23 |
| 2022 | 19 | 25 |
| 2023 | 14 | 27 |
| 2024 | 14 | 24 |
| 2025 | 23 | 22 |
| 2026 | 16 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 25/12Filter presses, i.e. of the plate or plate and frame type465
- B01D 25/22Cell-type filters238
- B01D 25/32Removal of the filter cakes174
- B01D 25/28Leaching or washing filter cakes in the filter handling the filter cake166
- B01D 25/001Making filtering elements not provided for elsewhere120
- B01D 25/30Feeding devices83
- B01D 25/003Integrally combined with devices for controlling the filtration50
- B01D 25/02In which the elements are pre-formed independent filtering units21
All 9 subgroupsShow fewer
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
- Inline filter apparatus526US 5,820,646 ADonaldson Company, Inc. · 1998
- Filter element incorporating a handle member390US 6,235,195 B1Donaldson Company, Inc. · 2001
- Conical filter341US 5,902,364 ADonaldson Company, Inc. · 1999
- Slanted inline filter319US 5,772,883 ADonaldson Company, Inc. · 1998
- Fluid filtering device309US 4,589,983 ADonaldson Company, Inc. · 1986