B01D 24/4636
With backwash shoes
Official title: {with backwash shoes; with nozzles}
B01D24/4636 (With backwash shoes) appears on 117 US grants and 77 published applications in this corpus.
Search patents in B01D- Granted patents
- 117
- Published applications
- 77
- Assignees
- 76
- Inventors
- 142
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 2 | 6 |
| 2015 | 2 | 6 |
| 2016 | 4 | 4 |
| 2017 | 6 | 4 |
| 2018 | 4 | 9 |
| 2019 | 5 | 5 |
| 2020 | 4 | 10 |
| 2021 | 9 | 6 |
| 2022 | 5 | 4 |
| 2023 | 6 | 3 |
| 2024 | 3 | 3 |
| 2025 | 4 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Portable filter cleaning system and method of cleaning a filter21 Oct 2025US 12,447,421 B2Cyclone Filter Tools LLC
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- Devices and methods for moving, removing and/or installing one or more components of a treatment unit10 Sep 2024US 12,083,451 B2Roberts Marketing DE, Inc.
- Devices and methods for moving, removing and/or installing one or more components of a treatment unit5 Mar 2026US 2026/0061345 A1Roberts Marketing DE, Inc.
- Portable Filter Cleaning System And Method Of Cleaning A Filter12 Feb 2026US 2026/0042038 A1Cyclone Filter Tools LLC
- Method and Apparatus for Cleaning Filter Media4 Dec 2025US 2025/0367578 A1Veolia Water Solutions & Technologies Support
- Devices and methods for moving, removing and/or installing one or more components of a treatment unit28 Nov 2024US 2024/0390822 A1Roberts Marketing DE, Inc.
- Filter Apparatus1 Aug 2024US 2024/0252962 A1Hydac Process Technology GmbH
Most cited
By later US patents
- Combined air/water backwash in a travelling bridge filter83US 5,401,405 ADavis Water & Waste Industries, Inc. · 1995
- 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 clarifying apparatus57US 4,931,175 ALenox Institute for Research, Inc. · 1990
- Apparatus and method for clarification of water using combined flotation and filtration processes50US 4,377,485 ALenox Institute for Research, Inc. · 1983
- Filter bottom construction46US 4,619,765 ARoberts Filter Manufacturing Company · 1986