B01D 2201/04
Supports for the filtering elements
B01D2201/04 (Supports for the filtering elements) appears on 1,365 US grants and 1,338 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,365
- Published applications
- 1,338
- Assignees
- 662
- Inventors
- 2,606
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 13 | 0 |
| 1978 | 14 | 0 |
| 1979 | 10 | 0 |
| 1980 | 10 | 0 |
| 1981 | 14 | 0 |
| 1982 | 7 | 0 |
| 1983 | 10 | 0 |
| 1984 | 13 | 0 |
| 1985 | 20 | 0 |
| 1986 | 14 | 0 |
| 1987 | 15 | 0 |
| 1988 | 10 | 0 |
| 1989 | 15 | 0 |
| 1990 | 12 | 0 |
| 1991 | 15 | 0 |
| 1992 | 20 | 0 |
| 1993 | 15 | 0 |
| 1994 | 11 | 0 |
| 1995 | 19 | 0 |
| 1996 | 20 | 0 |
| 1997 | 25 | 0 |
| 1998 | 31 | 0 |
| 1999 | 30 | 0 |
| 2000 | 21 | 0 |
| 2001 | 30 | 10 |
| 2002 | 34 | 47 |
| 2003 | 34 | 44 |
| 2004 | 22 | 42 |
| 2005 | 33 | 38 |
| 2006 | 29 | 38 |
| 2007 | 18 | 34 |
| 2008 | 19 | 31 |
| 2009 | 11 | 35 |
| 2010 | 13 | 26 |
| 2011 | 25 | 25 |
| 2012 | 32 | 46 |
| 2013 | 20 | 52 |
| 2014 | 22 | 40 |
| 2015 | 30 | 52 |
| 2016 | 38 | 51 |
| 2017 | 35 | 61 |
| 2018 | 32 | 55 |
| 2019 | 57 | 67 |
| 2020 | 77 | 119 |
| 2021 | 59 | 101 |
| 2022 | 77 | 91 |
| 2023 | 72 | 66 |
| 2024 | 57 | 72 |
| 2025 | 66 | 52 |
| 2026 | 35 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2201/0415Details of supporting structuresIndexing code759
- B01D 2201/043Filter tubes connected to platesIndexing code366
- B01D 2201/0407Perforated supports on both sides of the filtering elementIndexing code183
- B01D 2201/0469Filter tubes connected to collector tubesIndexing code98
- B01D 2201/0461SpringsIndexing code79
Recent patents
- Candle filter device6 Oct 2026US 12,752,222 B2Lenzing Aktiengesellschaft
- System and method for ice bath filtering22 Sep 2026US 12,741,241 B2Lowtemp Industries LLC
- Two stage filter cartridge with an expandable frame facilitating replacement of the filter media1 Sep 2026US 12,722,105 B2Nanodocks Technology Limited
- Retrofitting and use of rectangular filters, assembly and method for filtration25 Aug 2026US 12,714,957 B2Filtration Technology Corporation
- Fluid filter retention mechanism18 Aug 2026US 12,708,869 B2Caterpillar Inc.
- Collapsible Funnel with Integrated Mesh Screen for Capturing Kidney Stones from Urine Flow8 Oct 2026US 2026/0306078 A1
- Coalescing plate stack supports1 Oct 2026US 2026/0295466 A1Park Environmental Equipment, LLC
- Effluent filtration of a washing machine through a helical brush10 Sep 2026US 2026/0263972 A1MANN+HUMMEL Life Sciences & Environment Holding Singapore Pte. Ltd.
- Washing machine effluent filtration with an agitator rotating around a filter element3 Sep 2026US 2026/0257157 A1MANN+HUMMEL Life Sciences & Environment Holding Singapore Pte. Ltd.
- Bile drainage and reinfusion device27 Aug 2026US 2026/0248995 A1Nanjing Drum Tower Hospital
Most cited
By later US patents
- Stormwater filter assembly483US 8,110,099 B2Contech Stormwater Solutions Inc. · 2012
- Filter material construction and method335US 5,672,399 ADonaldson Company, Inc. · 1997
- Filter element having flange and methods266US 6,517,598 B2Donaldson Company, Inc. · 2003
- Replacement filter cartridge assembly253US 5,211,846 APleatco Electronic & Filter Corp. · 1993
- Corrugated filter element with external spiral tape support218US 4,402,830 APall Corporation · 1983