B01D 24/4621
By nozzles acting on the cake side of the filter material, or
Official title: {by nozzles acting on the cake side of the filter material, or by fluids acting in co-current direction with the feed stream}
B01D24/4621 (By nozzles acting on the cake side of the filter material, or) appears on 46 US grants and 23 published applications in this corpus.
Search patents in B01D- Granted patents
- 46
- Published applications
- 23
- Assignees
- 37
- Inventors
- 75
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 3 |
| 2004 | 0 | 5 |
| 2005 | 2 | 0 |
| 2006 | 2 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 2 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 1 |
| 2025 | 2 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Wastewater filtering method and apparatus comprising filter media of different sizes9 Sep 2025US 12,410,080 B2Tomorrow Water
- Regenerative media filter air scouring apparatus and method17 Jun 2025US 12,330,959 B2Neptune-Benson, LLC
- Water purification housing and rainwater purification system using the same25 Jun 2024US 12,017,160 B2
- Methods for cleaning filtration system media20 Sep 2022US 11,446,590 B2Parkson Corporation
- Methods for cleaning filtration system media15 Dec 2020US 10,864,465 B2Schreiber Corporation, Inc.
- Wastewater filtering method and apparatus comprising filter media of different sizes30 Oct 2025US 2025/0333341 A1Bkt Co., Ltd.
- Wastewater filtering method and apparatus comprising filter media of different sizes30 Oct 2025US 2025/0333342 A1Bkt Co., Ltd.
- Regenerative media filter air scouring apparatus and method25 Sep 2025US 2025/0296855 A1Neptune-Benson, LLC
- Heat exchanger capable of cooling coolant of external plant and sewage treatment device comprising same15 Feb 2024US 2024/0051846 A1Bkt Co., Ltd.
- Wastewater filtering method and apparatus comprising filter media of different sizes29 Jun 2023US 2023/0202891 A1Bkt Co., Ltd.
Most cited
By later US patents
- Filter cartridge with regulated surface cleaning mechanism44US 6,649,048 B2Stormwater Management, Inc. · 2003
- Water filtration apparatus having upflow buoyant media filter and downflow nonbuoyant media filter37US 4,608,181 ANeptune Microfloc, Inc. · 1986
- High speed upward flow filtration apparatus36US 5,248,415 AMitsuimiikekakouki Kabushiki Kaisha · 1993
- Submerged filter filled with granular material30US 4,604,197 ADegremont · 1986
- Filter cartridge with check valve protection26US 7,214,311 B2Contech Stormwater Solutions Inc. · 2007