B01D 25/285
By compression using inflatable membranes
Official title: {by compression using inflatable membranes}
B01D25/285 (By compression using inflatable membranes) appears on 123 US grants and 62 published applications in this corpus.
Search patents in B01D- Granted patents
- 123
- Published applications
- 62
- Assignees
- 66
- Inventors
- 156
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 10 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 3 | 1 |
| 2005 | 1 | 3 |
| 2006 | 0 | 3 |
| 2007 | 1 | 2 |
| 2008 | 2 | 6 |
| 2009 | 1 | 2 |
| 2010 | 3 | 7 |
| 2011 | 3 | 3 |
| 2012 | 3 | 2 |
| 2013 | 6 | 4 |
| 2014 | 0 | 4 |
| 2015 | 3 | 2 |
| 2016 | 3 | 2 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 1 |
| 2020 | 1 | 3 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 5 |
| 2024 | 0 | 1 |
| 2025 | 4 | 0 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter plate assembly for a filter press, and such a filter press30 Dec 2025US 12,508,524 B2Metso Finland Oy
- 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 press4 Nov 2025US 12,458,910 B2Metso Finland Oy
- Filter diaphragm for a recessed plate-type filter, a diaphragm filter plate, a diaphragm filter plate assembly and a recessed plate-type filter21 Oct 2025US 12,447,422 B2Metso Finland Oy
- Filter diaphragm for a horizontal plate and frame-type filter, such as a tower press7 Oct 2025US 12,434,176 B2Metso Finland Oy
- Plate for a filter press, filter press, use of the filter press and method for cleaning the filter press22 Feb 2022US 11,253,800 B2Strassburger Filter GmbH & Co. KG
- Apparatus and process for recovery of a valuable material13 Aug 2026US 2026/0233129 A1Evonik Operations GmbH
- Method for producing dairy substitute products9 Jul 2026US 2026/0191217 A1Meura S.A.
- Diaphragm filter plate for a recessed plate -type filter15 Jan 2026US 2026/0014496 A1Metso Finland Oy
- Filtering machine of filter plate type1 Jan 2026US 2026/0001012 A1Mitsubishi Kakoki Kaisha, Ltd.
- A filter plate assembly for a filter press, and such a filter press4 Apr 2024US 2024/0109007 A1Metso Outotec Finland Oy
Most cited
By later US patents
- Two piece frame and two piece diaphragm filter plate37US 6,149,806 A2000
- Filter press with alternating diaphragm squeeze chamber plates and filtration chamber plates35US 6,180,002 B2United States Filter Corporation · 2001
- Filter plate-and-diaphragm assemblies for a filter press27US 3,931,014 AEberhard Hoesch & Soehne · 1976
- Expressing filter plate for filter press of expression type27US 3,988,242 AKurita Machinery Manufacturing Company Limited · 1976
- Plate filter press27US 5,762,786 ARittershaus & Blecher GmbH · 1998