B01D 24/205
Downward filtration without specifications about the filter material supporting means
Official title: {Downward filtration without specifications about the filter material supporting means}
B01D24/205 (Downward filtration without specifications about the filter material supporting means) appears on 43 US grants and 27 published applications in this corpus.
Search patents in B01D- Granted patents
- 43
- Published applications
- 27
- Assignees
- 32
- Inventors
- 79
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 2 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 4 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 2 |
| 2019 | 3 | 3 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 3 |
| 2025 | 0 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aquarium skimmer devices, systems, and methods4 Aug 2026US 12,696,882 B2
- Aquarium skimmer devices, systems, and methods13 Feb 2024US 11,895,991 B2
- Animal waste filter8 Jun 2021US 11,027,997 B2
- Clearing device11 Aug 2020US 10,737,199 B2Doppstadt Familienholding GmbH
- Integrated unit for intake and pretreatment with local backwashing7 Jul 2020US 10,702,804 B2I. D.E. Technologies Ltd.
- Systems and Methods for Stormwater Treatment6 Aug 2026US 2026/0225917 A1Geostorage Corporation
- Waste water treatment system25 Jun 2026US 2026/0175147 A1Altinay Savunma Teknolojileri Anonim Sirketi
- Water Filter Priming Bag Apparatus, Systems and Methods19 Feb 2026US 2026/0048919 A1Clearly Filtered, Inc.
- Automated and self-cleaning gravel pack filter system for water treatment and disposal5 Jun 2025US 2025/0177895 A1Saudi Arabian Oil Company
- Aquarium skimmer devices, systems, and methods1 Aug 2024US 2024/0251765 A1
Most cited
By later US patents
- Method and apparatus for treating stormwater runoff122US 6,277,274 B12001
- Method and apparatus for treating stormwater runoff54US 6,569,321 B22003
- Method and apparatus for liquid treatment40US 5,256,299 AInternational Environmental Systems, Inc., USA · 1993
- Apparatus for filter backwashing26US 4,191,652 AEnvirotech Corporation · 1980
- Method of washing an upflow filter and filter bed employed in said filter23US 5,080,808 ARoberts Filter Manufacturing Company · 1992