B01D 46/54
Particle separators
Official title: Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
B01D46/54 (Particle separators) appears on 355 US grants and 424 published applications in this corpus.
Search patents in B01D- Granted patents
- 355
- Published applications
- 424
- Assignees
- 240
- Inventors
- 987
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 7 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 1 |
| 2002 | 8 | 4 |
| 2003 | 4 | 7 |
| 2004 | 7 | 12 |
| 2005 | 9 | 9 |
| 2006 | 6 | 10 |
| 2007 | 7 | 10 |
| 2008 | 7 | 11 |
| 2009 | 1 | 14 |
| 2010 | 4 | 15 |
| 2011 | 6 | 14 |
| 2012 | 13 | 15 |
| 2013 | 14 | 16 |
| 2014 | 12 | 15 |
| 2015 | 11 | 26 |
| 2016 | 13 | 17 |
| 2017 | 16 | 20 |
| 2018 | 11 | 16 |
| 2019 | 18 | 25 |
| 2020 | 19 | 24 |
| 2021 | 13 | 34 |
| 2022 | 20 | 27 |
| 2023 | 20 | 31 |
| 2024 | 17 | 17 |
| 2025 | 20 | 19 |
| 2026 | 14 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polyethersulfone fiber webs22 Sep 2026US 12,741,243 B2Hollingsworth & Vose Company
- Preparation method of bismuth ion filter membrane and application thereof15 Sep 2026US 12,734,470 B2Work Together Marketing Consultant Limited
- Point of use or point of dispense filter with multiple pleat packs15 Sep 2026US 12,734,488 B2Entegris, Inc.
- Biodegradable filters11 Aug 2026US 12,702,942 B2NxtNano, LLC
- Integrated dust extractor and power tool11 Aug 2026US 12,703,053 B2Milwaukee Electric Tool Corporation
- Adsorbent filter assembly1 Oct 2026US 2026/0295488 A1Donaldson Company, Inc.
- Communicating filter plants27 Aug 2026US 2026/0249226 A1Kappa Filter Systems GmbH
- Waterproof member and waterproof case30 Jul 2026US 2026/0216629 A1Nitto Denko Corporation
- Micro-fibre filter cartridge and filter unit23 Jul 2026US 2026/0208078 A1
- Reduction Of The CO2 Concentration In A CO2 Incubator23 Jul 2026US 2026/0209677 A1Thermo Electron LED GmbH
Most cited
By later US patents
- Air filtration arrangements having fluted media constructions and methods381US 6,673,136 B2Donaldson Company, Inc. · 2004
- Filter material construction and method335US 5,672,399 ADonaldson Company, Inc. · 1997
- Smoke plume evacuation filtration system295US 6,585,791 B12003
- Polymer, polymer microfiber, polymer nanofiber and applications including filter structures252US 6,743,273 B2Donaldson Company, Inc. · 2004
- Cleanable high efficiency filter media structure and applications for use231US 7,008,465 B2Donaldson Company, Inc. · 2006