B01D 35/30
Filter housing constructions
B01D35/30 (Filter housing constructions) appears on 2,311 US grants and 2,546 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,311
- Published applications
- 2,546
- Assignees
- 1,037
- Inventors
- 4,274
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 9 | 0 |
| 1979 | 2 | 0 |
| 1980 | 11 | 0 |
| 1981 | 7 | 0 |
| 1982 | 14 | 0 |
| 1983 | 10 | 0 |
| 1984 | 8 | 0 |
| 1985 | 16 | 0 |
| 1986 | 14 | 0 |
| 1987 | 25 | 0 |
| 1988 | 18 | 0 |
| 1989 | 20 | 0 |
| 1990 | 25 | 0 |
| 1991 | 20 | 0 |
| 1992 | 20 | 0 |
| 1993 | 25 | 0 |
| 1994 | 22 | 0 |
| 1995 | 19 | 0 |
| 1996 | 26 | 0 |
| 1997 | 38 | 0 |
| 1998 | 50 | 0 |
| 1999 | 40 | 0 |
| 2000 | 28 | 0 |
| 2001 | 34 | 15 |
| 2002 | 32 | 45 |
| 2003 | 34 | 64 |
| 2004 | 35 | 71 |
| 2005 | 35 | 66 |
| 2006 | 40 | 71 |
| 2007 | 45 | 62 |
| 2008 | 29 | 48 |
| 2009 | 27 | 65 |
| 2010 | 34 | 54 |
| 2011 | 43 | 49 |
| 2012 | 33 | 59 |
| 2013 | 45 | 100 |
| 2014 | 48 | 106 |
| 2015 | 62 | 132 |
| 2016 | 76 | 124 |
| 2017 | 87 | 121 |
| 2018 | 115 | 131 |
| 2019 | 117 | 153 |
| 2020 | 133 | 200 |
| 2021 | 117 | 165 |
| 2022 | 154 | 171 |
| 2023 | 141 | 134 |
| 2024 | 127 | 133 |
| 2025 | 116 | 119 |
| 2026 | 68 | 88 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 35/306Filter mounting adapter550
- B01D 35/301Constructions of two or more housings255
- B01D 35/31Including arrangements for environmental protection187
- B01D 35/34Open-topped26
- B01D 35/308Made of at least two different materials21
- B01D 35/305With features related to crash tests or crash safety measures3
Recent patents
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- Garment care apparatus and control method therefor22 Sep 2026US 12,741,242 B2Samsung Electronics Co., Ltd.
- Point of use or point of dispense filter with multiple pleat packs15 Sep 2026US 12,734,488 B2Entegris, Inc.
- Water filter cartridge and head having keyed engagement8 Sep 2026US 12,728,373 B2Culligan International Company
- Animal watering system8 Oct 2026US 2026/0305570 A1Aborder Products, Inc.
- Water filter priming pump8 Oct 2026US 2026/0306973 A1
- Filter assemblies and related filter elements8 Oct 2026US 2026/0306974 A1Donaldson Company, Inc.
- Filter Assembly having a Locking Mechanism with Enhanced Engagement Features8 Oct 2026US 2026/0306975 A1Parker-Hannifin Corporation
- Filter arrangements for liquids and methods of use8 Oct 2026US 2026/0306976 A1Donaldson Company, Inc.
Most cited
By later US patents
- Fluid filter system524US 8,272,516 B2Advanced Filtration Systems Inc. · 2012
- Starter assembly for a gas discharge lamp282US 6,806,649 B2Access Business Group International LLC · 2004
- Environmentally friendly filter cartridge275US 5,685,985 ABaldwin Filters, Inc. · 1997
- Filter assembly featuring displaceable filter head plunger for locking into filter cartridge detent189US 4,915,831 ACuno Incorporated · 1990
- Quick-change filter cartridge and head therefor175US 4,735,716 ACuno Corporated · 1988