B01D 46/06
With means keeping the working surfaces flat
Official title: with means keeping the working surfaces flat
B01D46/06 (With means keeping the working surfaces flat) appears on 143 US grants and 81 published applications in this corpus.
Search patents in B01D- Granted patents
- 143
- Published applications
- 81
- Assignees
- 98
- Inventors
- 276
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 8 | 0 |
| 1980 | 3 | 0 |
| 1981 | 13 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 3 |
| 2003 | 4 | 2 |
| 2004 | 3 | 3 |
| 2005 | 3 | 3 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 9 |
| 2010 | 2 | 9 |
| 2011 | 4 | 8 |
| 2012 | 7 | 4 |
| 2013 | 6 | 2 |
| 2014 | 3 | 1 |
| 2015 | 3 | 4 |
| 2016 | 1 | 1 |
| 2017 | 3 | 1 |
| 2018 | 0 | 2 |
| 2019 | 1 | 2 |
| 2020 | 3 | 3 |
| 2021 | 2 | 6 |
| 2022 | 2 | 3 |
| 2023 | 1 | 4 |
| 2024 | 3 | 1 |
| 2025 | 5 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Filter systems with filter bag assemblies including filter bags with radial seal gaskets2 Jun 2026US 12,643,065 B2Donaldson Company, Inc.
- Air filtration monitoring system with learning features25 Nov 2025US 12,480,675 B2Donaldson Company, Inc.
- Air filter systems, filter bag assemblies, filter bags and methods11 Nov 2025US 12,465,881 B2Donaldson Company, Inc.
- Impactor/separator element and devices comprising an impactor separator/element of this type27 May 2025US 12,311,297 B2ElsäSser Filtertechnik GmbH
- Filter bag support system, a bag house equipment and a method for installing a filter bag15 Apr 2025US 12,274,965 B2Tetra Laval Holdings & Finance S. A.
- Air filtration monitoring system with learning features14 May 2026US 2026/0132945 A1Donaldson Company, Inc.
- Filter Support, Filter Assembly Including Filter Support, and Method of Modifying Filter Using Filter Support17 Jul 2025US 2025/0229204 A1
- Air filter systems, filter bag assemblies, filter bags and methods11 Apr 2024US 2024/0115983 A1Donaldson Company, Inc.
- Impactor/separator element and devices comprising an impactor separator/element of this type26 Oct 2023US 2023/0338881 A1ElsäSser Filtertechnik GmbH
- A filter bag support system, a bag house equipment and a method for installing a filter bag26 Oct 2023US 2023/0338884 A1Tetra Laval Holdings & Finance S. A.
Most cited
By later US patents
- Air filter construction98US 4,193,780 AIndustrial Air, Inc. · 1980
- Composite filter set for gas flow ducts86US 4,080,185 AFirma Carl Freudenberg · 1978
- Compact filter assembly62US 4,769,052 ACuno Incorporated · 1988
- Top removal support for dust collector bags47US 4,292,057 AFlex-Kleen Corporation · 1981
- Filter arrangement45US 4,276,069 AAmerican Air Filter Company, Inc. · 1981