B01D 25/305
For discharging filtrate
Official title: {for discharging filtrate}
B01D25/305 (For discharging filtrate) appears on 27 US grants and 20 published applications in this corpus.
Search patents in B01D- Granted patents
- 27
- Published applications
- 20
- Assignees
- 19
- Inventors
- 51
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 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 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 3 | 2 |
| 2013 | 2 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 3 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Grid and a vat for a filtrate vat assembly of a vertical filter press28 Apr 2026US 12,611,620 B2Metso Finland Oy
- Outlet piece assembly for a horizontal plate and frame-type filter, such as a tower press16 Dec 2025US 12,496,538 B2Metso Finland Oy
- Paper capillary lateral flow fluid filter for bacterial and nanometer sized particle contamination26 Mar 2024US 11,938,423 B2New York University in Abu Dhabi Corporation
- Filter press assembly25 Oct 2022US 11,478,730 B2M.W. Watermark, L.L.C.
- High-efficiency filter press31 May 2022US 11,344,825 B2Jingjin Equipment Inc.
- Uniform spray-coating, cumulatively-stacking and squeezing solid-liquid separation system26 Jun 2025US 2025/0205619 A1Beijing Jinyu Mangrove Environmental Protection Technology Co., Ltd.
- Filtrate vat assembly for a filter press1 Feb 2024US 2024/0033661 A1Metso Outotec Finland Oy
- A grid and a vat for a filtrate vat assembly of a vertical filter press16 Nov 2023US 2023/0364531 A1Metso Outotec Finland Oy
- An outlet piece assembly for a horizontal plate and frame -type filter, such as a tower press8 Jun 2023US 2023/0173411 A1Metso Outotec Finland Oy
- A filter plate for a horizontal plate and frame-type filter, such as a tower press1 Jun 2023US 2023/0166202 A1Metso Outotec Finland Oy
Most cited
By later US patents
- Inline filter apparatus526US 5,820,646 ADonaldson Company, Inc. · 1998
- Slanted inline filter319US 5,772,883 ADonaldson Company, Inc. · 1998
- Method of making a fluted filter media for air filter112US 7,329,326 B2Donaldson Company, Inc. · 2008
- Process and materials for coiling z-filter media, and/or closing flutes of filter media; and, products87US 8,226,786 B2Donaldson Company, Inc. · 2012
- Fluted filter media26US 8,460,442 B2Donaldson Company, Inc. · 2013