B01D 24/12
Downward filtration, the filtering material being supported by pervious surfaces
Official title: Downward filtration, the filtering material being supported by pervious surfaces (B01D24/18 takes precedence)
B01D24/12 (Downward filtration, the filtering material being supported by pervious surfaces) appears on 170 US grants and 96 published applications in this corpus.
Search patents in B01D- Granted patents
- 170
- Published applications
- 96
- Assignees
- 109
- Inventors
- 295
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 7 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 3 |
| 2002 | 4 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 2 | 4 |
| 2006 | 0 | 1 |
| 2007 | 3 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 0 | 3 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 2 | 5 |
| 2016 | 3 | 5 |
| 2017 | 3 | 4 |
| 2018 | 4 | 6 |
| 2019 | 8 | 12 |
| 2020 | 11 | 7 |
| 2021 | 9 | 10 |
| 2022 | 1 | 8 |
| 2023 | 5 | 5 |
| 2024 | 4 | 5 |
| 2025 | 5 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Regenerable system and method for filtering microfibres from a waste liquid22 Sep 2026US 12,742,277 B2Ifp Energies Nouvelles
- Lightweight fibrous media (LFM) filter31 Mar 2026US 12,589,336 B1
- 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
- Vessel screen retaining system and method6 May 2025US 12,290,094 B2Philip Morris USA Inc.
- Sustainable, facile separation of the molten carbonate electrolysis cathode product29 Apr 2025US 12,286,717 B2C2Cnt LLC
- Multi-zone filtration device for a down-flow hydroprocessing reactor21 May 2026US 2026/0138057 A1
- Water filter with replaceable active components5 Mar 2026US 2026/0061343 A1Blu Technology LLC
- Method and Apparatus for Cleaning Filter Media4 Dec 2025US 2025/0367578 A1Veolia Water Solutions & Technologies Support
- Vessel screen retaining system and method7 Aug 2025US 2025/0248438 A1Philip Morris USA Inc.
- Valve systems for a hybrid filter15 May 2025US 2025/0153078 A1Pentair Water Pool and Spa, Inc.
Most cited
By later US patents
- System for filtering liquids in a catch basin using filters in series and overflow channels87US 5,223,154 AEmcon Northwest, Inc. · 1993
- Combined air/water backwash in a travelling bridge filter83US 5,401,405 ADavis Water & Waste Industries, Inc. · 1995
- Storm water filtration system for use with conventional storm water collection sewers78US 5,133,619 A1992
- Deep bed filter68US 4,197,205 A1980
- Method for the partial fusion of objects45US 6,353,200 B2Inocon Technologie Gesellschaft m.b.H. · 2002