B01D 25/281
Specially for chamber filter presses
Official title: {specially for chamber filter presses}
B01D25/281 (Specially for chamber filter presses) appears on 7 US grants and 3 published applications in this corpus.
Search patents in B01D- Granted patents
- 7
- Published applications
- 3
- Assignees
- 7
- Inventors
- 14
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- 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
- Horizontal pressure filter with washing liquid recovery, and a filter system, a method for operating and a computer program product related thereto14 Jan 2020US 10,532,301 B2Outotec (Finland) Oy
- Method for filtering a suspension and recess plate3 Oct 2017US 9,776,109 B2Outotec (Finland) Oy
- Chamber filter press with rotor plates2 Feb 1988US 4,722,789 ABaukooperation GmbH
- Filter press8 Apr 1986US 4,581,138 AKurita Machinery Manufacturing Company Limited
- 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 press26 Jan 2023US 2023/0023076 A1Metso Outotec Finland Oy
- Horizontal pressure filter with washing liquid recovery, and a filter system, a method for operating and a computer program product related thereto23 May 2019US 2019/0151783 A1Outotec (Finland) Oy
- Method for filtering a suspension and recess plate30 Apr 2015US 2015/0114914 A1Outotec (Finland) Oy
Most cited
By later US patents
- Chamber filter press with rotor plates10US 4,722,789 ABaukooperation GmbH · 1988
- Plate filter with horizontally arranged bilaterally acting filters6US 3,968,040 AEberhard Hoesch & Sohne GmbH & Co. · 1976
- Filter press2US 4,581,138 AKurita Machinery Manufacturing Company Limited · 1986
- Filter cloth washing device for filter press1US 4,173,535 ANGK Insulators, Ltd. · 1979