B01D 46/04
Cleaning filters
B01D46/04 (Cleaning filters) appears on 344 US grants and 192 published applications in this corpus.
Search patents in B01D- Granted patents
- 344
- Published applications
- 192
- Assignees
- 219
- Inventors
- 622
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 7 | 0 |
| 1978 | 10 | 0 |
| 1979 | 9 | 0 |
| 1980 | 12 | 0 |
| 1981 | 30 | 0 |
| 1982 | 11 | 0 |
| 1983 | 10 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 11 | 0 |
| 1987 | 9 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 6 |
| 2004 | 5 | 5 |
| 2005 | 4 | 5 |
| 2006 | 2 | 8 |
| 2007 | 4 | 2 |
| 2008 | 3 | 6 |
| 2009 | 4 | 13 |
| 2010 | 4 | 9 |
| 2011 | 10 | 3 |
| 2012 | 8 | 6 |
| 2013 | 4 | 7 |
| 2014 | 6 | 10 |
| 2015 | 4 | 7 |
| 2016 | 2 | 3 |
| 2017 | 7 | 8 |
| 2018 | 4 | 9 |
| 2019 | 7 | 13 |
| 2020 | 3 | 9 |
| 2021 | 9 | 13 |
| 2022 | 9 | 16 |
| 2023 | 7 | 9 |
| 2024 | 8 | 11 |
| 2025 | 6 | 7 |
| 2026 | 9 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vapor displacement refueling including data communications, zero gravity and chemical looping combustion system25 Aug 2026US 12,718,682 B2
- Ash collecting system9 Jun 2026US 12,649,121 B2Beijing Zhong Xing Hui Rong NRG Saving Tech Co, Ltd
- Filter systems with filter bag assemblies including filter bags with radial seal gaskets2 Jun 2026US 12,643,065 B2Donaldson Company, Inc.
- Filter device for an additive manufacturing device12 May 2026US 12,623,285 B2EOS GmbH Electro Optical Systems
- Air cleaning module12 May 2026US 12,624,849 B2Seoul Viosys Co., Ltd.
- Filter systems with filter bag assemblies including filter bags with radial seal gaskets17 Sep 2026US 2026/0273447 A1Donaldson Company, 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.
- Vapor Displacement Refueling Including Onboard Internally Recirculating Chemical Looping Combustion System4 Jun 2026US 2026/0155037 A1
- 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
- Air filter assembly for filtering air with particulate matter82US 6,090,173 ADonaldson Company, Inc. · 2000
- Coanda injector and compressed gas line for connecting same78US 6,604,694 B1Intensiv-Filter GmbH & Co. KG · 2003
- Industrial vacuum loader with dust removal means for bag house filtration system75US 4,017,281 A1977
- Filter bag assembly75US 4,073,632 AUnited States Filter Corporation · 1978
- Pulsed backflush air filter75US 4,157,899 ACEA Carter-Day Company · 1979