B01D 24/28
Filters comprising loose filtering material, i.e. filtering material without any binder between
Official title: with the filter bed moving during the filtration (with the filter bed fluidised B01D24/36)
B01D24/28 (Filters comprising loose filtering material, i.e. filtering material without any binder between) appears on 88 US grants and 61 published applications in this corpus.
Search patents in B01D- Granted patents
- 88
- Published applications
- 61
- Assignees
- 49
- Inventors
- 123
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 3 |
| 2003 | 2 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 3 | 4 |
| 2009 | 1 | 2 |
| 2010 | 2 | 0 |
| 2011 | 3 | 4 |
| 2012 | 1 | 2 |
| 2013 | 1 | 5 |
| 2014 | 2 | 2 |
| 2015 | 0 | 3 |
| 2016 | 4 | 4 |
| 2017 | 4 | 3 |
| 2018 | 2 | 5 |
| 2019 | 6 | 6 |
| 2020 | 7 | 4 |
| 2021 | 2 | 3 |
| 2022 | 2 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Flow-through filtration and waste separation device5 Aug 2025US 12,378,136 B2
- Water restoration system15 Oct 2024US 12,116,291 B1Kimball Water & Energy LLC
- Fluid filtering apparatus and method20 Aug 2024US 12,064,716 B2
- Fluid filtering apparatus and method29 Aug 2023US 11,738,293 B2
- Pond filter and method for operating the pond filter30 Aug 2022US 11,427,491 B2Easyfirm Aps
- Tailings storage facility method and structure31 Jul 2025US 2025/0243640 A1Anglo American Technical & Sustainability Services Ltd
- Flow-Through Filtration and Waste Separation Device1 May 2025US 2025/0136470 A1
- Fluid filtering apparatus and method16 Nov 2023US 2023/0364530 A1
- A microparticle and/or nanoparticle separation, filtration and/or enriching device and method19 May 2022US 2022/0152612 A1Monash University
- Fluid filtering apparatus and method13 Jan 2022US 2022/0008842 A1
Most cited
By later US patents
- Method and apparatus for acoustically driven media filtration86US 6,221,258 B1Case Western Reserve University · 2001
- Method and apparatus for acoustically driven media filtration54US 6,797,158 B2Case Western Reserve University · 2004
- Process for continuous contacting of fluids and solids53US 4,808,317 AAdvanced Separation Technologies Incorporated · 1989
- Moving bed filters48US 5,454,959 A1995
- Filtration method and apparatus having a filtrate collection chamber within the filter bed38US 5,173,194 A1992