B01D 46/0002
Casings
Official title: {Casings; Housings; Frame constructions}
B01D46/0002 (Casings) appears on 3,549 US grants and 3,876 published applications in this corpus.
Search patents in B01D- Granted patents
- 3,549
- Published applications
- 3,876
- Assignees
- 1,413
- Inventors
- 6,556
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 12 | 0 |
| 1979 | 10 | 0 |
| 1980 | 15 | 0 |
| 1981 | 24 | 0 |
| 1982 | 15 | 0 |
| 1983 | 6 | 0 |
| 1984 | 15 | 0 |
| 1985 | 20 | 0 |
| 1986 | 15 | 0 |
| 1987 | 28 | 0 |
| 1988 | 17 | 0 |
| 1989 | 21 | 0 |
| 1990 | 17 | 0 |
| 1991 | 13 | 0 |
| 1992 | 20 | 0 |
| 1993 | 24 | 0 |
| 1994 | 25 | 0 |
| 1995 | 36 | 0 |
| 1996 | 31 | 0 |
| 1997 | 41 | 0 |
| 1998 | 57 | 0 |
| 1999 | 45 | 0 |
| 2000 | 39 | 0 |
| 2001 | 52 | 10 |
| 2002 | 57 | 47 |
| 2003 | 60 | 53 |
| 2004 | 48 | 71 |
| 2005 | 43 | 70 |
| 2006 | 42 | 69 |
| 2007 | 40 | 76 |
| 2008 | 36 | 80 |
| 2009 | 46 | 93 |
| 2010 | 59 | 113 |
| 2011 | 79 | 77 |
| 2012 | 90 | 106 |
| 2013 | 88 | 104 |
| 2014 | 92 | 145 |
| 2015 | 116 | 210 |
| 2016 | 133 | 181 |
| 2017 | 144 | 229 |
| 2018 | 137 | 212 |
| 2019 | 216 | 237 |
| 2020 | 228 | 279 |
| 2021 | 185 | 297 |
| 2022 | 215 | 302 |
| 2023 | 215 | 259 |
| 2024 | 241 | 239 |
| 2025 | 190 | 178 |
| 2026 | 133 | 139 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 46/0005Mounting of filtering elements within casings, housings or frames2,337
- B01D 46/0004Details of removable closures, lids, caps or filter heads622
- B01D 46/0012In-line filters214
- B01D 46/0013Modules175
- B01D 46/001Means for connecting filter housings to supports158
- B01D 46/0016Folded frame or housing constructions111
- B01D 46/0015Throw-away type filters78
- B01D 46/0017Filter elements installed in a branch of a pipe14
Recent patents
- Air filtration apparatus and system for providing patient information6 Oct 2026US 12,752,071 B2ResMed Pty Ltd
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit6 Oct 2026US 12,752,136 B2Dräger Safety AG & Co. KGaA
- Photocatalytic air conditioning filter module with antiviral performance6 Oct 2026US 12,752,226 B2Korea Institute of Civil Engineering and Building Technology
- Filter system comprising filter housing, replaceable filter element, and resonator structure6 Oct 2026US 12,752,227 B2Mann+Hummel GmbH
- Air filtration assembly6 Oct 2026US 12,752,230 B2Ufi Innovation Center S.R.L.
- Stackable air treatment device8 Oct 2026US 2026/0306982 A1Carrier Corporation
- Filter element for use with dust collector & other applications8 Oct 2026US 2026/0306986 A1Donaldson Company, Inc.
- Air cleaner8 Oct 2026US 2026/0309347 A1LG Electronics Inc.
- Folding cover for air filter unit1 Oct 2026US 2026/0295486 A1Ctt Trading Asia Limited
- Sterilizing Cabinet Filter Assembly1 Oct 2026US 2026/0295487 A1
Most cited
By later US patents
- Inline filter apparatus526US 5,820,646 ADonaldson Company, Inc. · 1998
- Filter arrangement; sealing system; and methods402US 6,190,432 B1Donaldson Company, Inc. · 2001
- Air filtration arrangements having fluted media constructions and methods381US 6,673,136 B2Donaldson Company, Inc. · 2004
- Air cleaner having sealing arrangement between media arrangement and housing342US 6,179,890 B2Donaldson Company, Inc. · 2001
- Slanted inline filter319US 5,772,883 ADonaldson Company, Inc. · 1998