B01D 24/44
For discharging filter cake
Official title: for discharging filter cake, e.g. chutes
B01D24/44 (For discharging filter cake) appears on 21 US grants and 15 published applications in this corpus.
Search patents in B01D- Granted patents
- 21
- Published applications
- 15
- Assignees
- 15
- Inventors
- 39
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 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 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 3 | 2 |
| 2023 | 0 | 0 |
| 2024 | 3 | 2 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Solid-liquid filtration assembly and method of use25 Nov 2025US 12,478,900 B2
- Vessel screen retaining system and method6 May 2025US 12,290,094 B2Philip Morris USA Inc.
- Plant mixture processing systems3 Dec 2024US 12,156,605 B1
- Water purification housing and rainwater purification system using the same25 Jun 2024US 12,017,160 B2
- Vessel screen retaining system and method5 Mar 2024US 11,918,030 B2Philip Morris USA Inc.
- Vessel screen retaining system and method7 Aug 2025US 2025/0248438 A1Philip Morris USA Inc.
- Hydraulic sludge recovery system27 Mar 2025US 2025/0099880 A1The Board of Trustees of the Leland Stanford Junior University
- Solid-liquid filtration assembly and method of use1 Aug 2024US 2024/0252957 A1
- Vessel screen retaining system and method20 Jun 2024US 2024/0196951 A1Philip Morris USA Inc.
- Water purification housing and rainwater purification system using the same8 Dec 2022US 2022/0387909 A1
Most cited
By later US patents
- Water filtration process and apparatus having upflow filter with buoyant filter media and downflow filter with nonbuoyant filter media70US 4,547,286 ANeptune Microfloc, Inc. · 1985
- Water filtration apparatus having upflow buoyant media filter and downflow nonbuoyant media filter37US 4,608,181 ANeptune Microfloc, Inc. · 1986
- Filter apparatus24US 4,454,034 AAqua-Aerobic Systems, Inc. · 1984
- Method for enhancing the separation capacity of a multi-bed filtration system21US 4,793,934 ASignal Environmental Systems, Inc. · 1988
- Water treatment process and apparatus and device for the distribution of water to be treated into and for the recovery from washing liquid from a water treatment filter apparatus13US 4,338,202 ADegremont · 1982