B01D 46/023
Pockets filters, i.e. multiple bag filters mounted on a common frame
Official title: {Pockets filters, i.e. multiple bag filters mounted on a common frame}
B01D46/023 (Pockets filters, i.e. multiple bag filters mounted on a common frame) appears on 114 US grants and 129 published applications in this corpus.
Search patents in B01D- Granted patents
- 114
- Published applications
- 129
- Assignees
- 86
- Inventors
- 277
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 6 |
| 2010 | 0 | 4 |
| 2011 | 5 | 3 |
| 2012 | 1 | 5 |
| 2013 | 2 | 6 |
| 2014 | 6 | 3 |
| 2015 | 5 | 10 |
| 2016 | 3 | 12 |
| 2017 | 7 | 9 |
| 2018 | 6 | 10 |
| 2019 | 9 | 11 |
| 2020 | 8 | 13 |
| 2021 | 8 | 7 |
| 2022 | 3 | 6 |
| 2023 | 9 | 6 |
| 2024 | 2 | 4 |
| 2025 | 6 | 4 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air filter medium and air filter product25 Nov 2025US 12,478,904 B2Daikin Industries, Ltd.
- Filter assembly, filter bag and method of replacing a filter bag25 Nov 2025US 12,478,911 B2Leanfil Oy
- Clamp system and filter arrangement and methods12 Aug 2025US 12,383,854 B2Donaldson Company, Inc.
- Filter assembly with sedimentation pocket1 Apr 2025US 12,263,432 B2Pratt & Whitney Canada Corp.
- Apparatus and method for plasma synthesis of graphitic products including graphene18 Mar 2025US 12,252,402 B2Levidian Nanosystems Limited
- In-situ regeneration of filter medium for improving catalytic efficiency10 Sep 2026US 2026/0264016 A1W. L. Gore & Associates, Inc.
- Flue gas cleaning system23 Jul 2026US 2026/0208089 A1Kanadevia Inova AG
- Pre-Treatment Dust Removal Filter Bag Dust Collecting Apparatus Based on Inertial Collision and Edge IOT, and Control Method Thereof18 Jun 2026US 2026/0166461 A1EMSOLUTION CO., Ltd.
- Reusable multi-pocket air filter9 Apr 2026US 2026/0097345 A1K&N Engineering, Inc.
- Filters and filter assemblies with canted openings, collectors and methods of use26 Mar 2026US 2026/0084083 A1Donaldson Company, Inc.
Most cited
By later US patents
- Composite filter set for gas flow ducts86US 4,080,185 AFirma Carl Freudenberg · 1978
- Exchangeable filter element41US 4,225,328 ADelbag-Luftfilter GmbH · 1980
- Pocket filter having inner frames mounted within an outer frame32US 6,451,079 B1Camfil AB · 2002
- Gas filter element25US 4,056,375 AFirma Carl Freudenberg · 1977
- Pocket filter and method and apparatus for making the same25US 5,928,396 AAAF International · 1999