B01D 25/32
Removal of the filter cakes
B01D25/32 (Removal of the filter cakes) appears on 174 US grants and 79 published applications in this corpus.
Search patents in B01D- Granted patents
- 174
- Published applications
- 79
- Assignees
- 95
- Inventors
- 250
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 8 | 0 |
| 1980 | 6 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 3 |
| 2009 | 3 | 2 |
| 2010 | 0 | 5 |
| 2011 | 2 | 2 |
| 2012 | 2 | 1 |
| 2013 | 4 | 8 |
| 2014 | 1 | 2 |
| 2015 | 6 | 2 |
| 2016 | 1 | 3 |
| 2017 | 1 | 3 |
| 2018 | 2 | 4 |
| 2019 | 2 | 6 |
| 2020 | 4 | 1 |
| 2021 | 3 | 6 |
| 2022 | 4 | 6 |
| 2023 | 2 | 1 |
| 2024 | 1 | 6 |
| 2025 | 2 | 6 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Filter press with multi-function robot for maintenance, tracking and wear control of filtering septa31 Mar 2026US 12,589,337 B2Diemme Filtration S.R.L.
- Mechanical demoisturizing of partially-decomposed organic material13 Jan 2026US 12,521,651 B2American Peat Technology, LLC
- Filter cloth cleaning method of filter press13 Jan 2026US 12,521,652 B2Ishigaki Company Limited
- Filter press and a filter plate compression and transport retrofitting kit for a filter press20 May 2025US 12,303,808 B2Metso Outotec Finland Oy
- Filter press and washer for filter plate apparatus29 Apr 2025US 12,285,706 B2FLSmidth A/S
- Loss-free process for producing cathode active material without generating waste and wastewater24 Sep 2026US 2026/0285703 A1
- Apparatus and process for recovery of a valuable material13 Aug 2026US 2026/0233129 A1Evonik Operations GmbH
- Sleeve for a filtering unit with backwashing30 Apr 2026US 2026/0115631 A1Alfa Laval Moatti
- Discharge arrangement and method for horizontal filtration equipment and horizontal filtration equipment16 Oct 2025US 2025/0319427 A1Metso Finland Oy
- Uniform spray-coating, cumulatively-stacking and squeezing solid-liquid separation system26 Jun 2025US 2025/0205619 A1Beijing Jinyu Mangrove Environmental Protection Technology Co., Ltd.
Most cited
By later US patents
- Filter element incorporating a handle member390US 6,235,195 B1Donaldson Company, Inc. · 2001
- Air filter44US 7,481,863 B2Mann+Hummel GmbH · 2009
- Self-cleaning filter assembly for solenoid-actuated valve37US 4,360,037 AAnthony Manufacturing Corp. · 1982
- Filter apparatus including stacked intake and discharge plates31US 5,549,824 AIng. A. Maurer S.A. · 1996
- Filtering apparatus26US 4,935,126 A1990