B01D 24/42
For discharging filtrate
Official title: for discharging filtrate
B01D24/42 (For discharging filtrate) appears on 82 US grants and 47 published applications in this corpus.
Search patents in B01D- Granted patents
- 82
- Published applications
- 47
- Assignees
- 55
- Inventors
- 137
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 2 | 2 |
| 2015 | 4 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 3 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 4 | 5 |
| 2021 | 3 | 3 |
| 2022 | 4 | 6 |
| 2023 | 2 | 3 |
| 2024 | 1 | 2 |
| 2025 | 6 | 5 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for stormwater management6 Oct 2026US 12,753,093 B2Advanced Drainage Systems, Inc.
- Systems and methods for stormwater management9 Dec 2025US 12,492,130 B2Advanced Drainage Systems, Inc.
- Solid-liquid filtration assembly and method of use25 Nov 2025US 12,478,900 B2
- Water tank with tank outlet valve and water filter cartridge with two water filter cartridge outlets which are arranged concentrically to one another30 Sep 2025US 12,427,450 B2AQUIS WASSER-LUFT-SYSTEME GMBH, Lindau
- Underdrain filtered water collection systems with winged screen diffusers26 Aug 2025US 12,397,247 B2De Nora Water Technologies, LLC
- Filtration system14 May 2026US 2026/0131263 A2The Pennington School
- Filtration system11 Dec 2025US 2025/0375720 A1The Pennington School, Women in STEM Solving Problems ("WISSP")
- Enclosed media fluid filtration device13 Nov 2025US 2025/0345726 A1Advanced Drainage Systems, Inc.
- Feedback controlled gas lift conveyance of slurry13 Nov 2025US 2025/0347297 A1
- Underdrain Filtered Water Collection Systems with Winged Screen Diffusers29 May 2025US 2025/0170499 A1De Nora Water Technologies, LLC
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 clarifying apparatus57US 4,931,175 ALenox Institute for Research, Inc. · 1990
- Moving bed filters48US 5,454,959 A1995
- Distributor for filters46US 4,753,726 AEssef Corporation · 1988
- Filter media support and containment system39US 4,133,766 AKoppers Company, Inc. · 1979