B01D 46/4281
Venturi's or systems showing a venturi effect
Official title: {Venturi's or systems showing a venturi effect}
B01D46/4281 (Venturi's or systems showing a venturi effect) appears on 121 US grants and 47 published applications in this corpus.
Search patents in B01D- Granted patents
- 121
- Published applications
- 47
- Assignees
- 61
- Inventors
- 173
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 12 | 0 |
| 1982 | 6 | 0 |
| 1983 | 0 | 0 |
| 1984 | 9 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 5 |
| 2004 | 2 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 3 |
| 2007 | 2 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 1 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 2 | 1 |
| 2015 | 3 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 4 |
| 2019 | 2 | 0 |
| 2020 | 4 | 4 |
| 2021 | 2 | 6 |
| 2022 | 3 | 2 |
| 2023 | 1 | 1 |
| 2024 | 5 | 2 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air filter systems, filter bag assemblies, filter bags and methods11 Nov 2025US 12,465,881 B2Donaldson Company, Inc.
- Filter unit with flow optimization1 Jul 2025US 12,343,662 B2Eaton Intelligent Power Limited
- Orifice-defining entry plate with support brace for filtration device21 Jan 2025US 12,201,931 B2Products Unlimited, Inc.
- Filter systems with dirty air chamber spacer elements and methods of using the same5 Nov 2024US 12,134,060 B2Donaldson Company, Inc.
- Orifice-defining entry plate for filtration device21 May 2024US 11,986,761 B2Products Unlimited, Inc.
- Component for a filter unit28 May 2026US 2026/0145108 A1Carl Freudenberg KG
- Filter systems with dirty air chamber spacer elements and methods of using the same6 Feb 2025US 2025/0041781 A1Donaldson Company, Inc.
- Monitoring devices for air filtration systems5 Dec 2024US 2024/0399280 A1Donaldson Company, Inc.
- Air filter systems, filter bag assemblies, filter bags and methods11 Apr 2024US 2024/0115983 A1Donaldson Company, Inc.
- Filter systems with dirty air chamber spacer elements and methods of using the same23 Nov 2023US 2023/0372857 A1Donaldson Company, Inc.
Most cited
By later US patents
- Cleanable high efficiency filter media structure and applications for use231US 7,008,465 B2Donaldson Company, Inc. · 2006
- Air cleaning system for a robotic welding chamber110US 6,758,875 B2Great Lakes Air Systems, Inc. · 2004
- Dust collector107US 4,218,227 ADonaldson Company, Inc. · 1980
- Air filter assembly for filtering air with particulate matter106US 5,562,746 ADonaldson Company, Inc. · 1996
- Suspension gasket seal and system for baghouse filter units88US 4,159,197 ADonaldson Company, Inc. · 1979