B01D 2273/00
Operation of filters specially adapted for separating dispersed particles from gases or
Official title: Operation of filters specially adapted for separating dispersed particles from gases or vapours
B01D2273/00 (Operation of filters specially adapted for separating dispersed particles from gases or) appears on 1,318 US grants and 1,447 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,318
- Published applications
- 1,447
- Assignees
- 855
- Inventors
- 3,399
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 10 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 9 | 0 |
| 1982 | 13 | 0 |
| 1983 | 4 | 0 |
| 1984 | 9 | 0 |
| 1985 | 6 | 0 |
| 1986 | 9 | 0 |
| 1987 | 12 | 0 |
| 1988 | 16 | 0 |
| 1989 | 14 | 0 |
| 1990 | 10 | 0 |
| 1991 | 8 | 0 |
| 1992 | 15 | 0 |
| 1993 | 21 | 0 |
| 1994 | 24 | 0 |
| 1995 | 31 | 0 |
| 1996 | 24 | 0 |
| 1997 | 14 | 0 |
| 1998 | 24 | 0 |
| 1999 | 24 | 0 |
| 2000 | 18 | 0 |
| 2001 | 30 | 4 |
| 2002 | 24 | 21 |
| 2003 | 23 | 31 |
| 2004 | 19 | 31 |
| 2005 | 20 | 33 |
| 2006 | 19 | 43 |
| 2007 | 20 | 44 |
| 2008 | 29 | 36 |
| 2009 | 17 | 36 |
| 2010 | 27 | 35 |
| 2011 | 25 | 40 |
| 2012 | 27 | 28 |
| 2013 | 31 | 30 |
| 2014 | 20 | 36 |
| 2015 | 18 | 21 |
| 2016 | 28 | 41 |
| 2017 | 31 | 67 |
| 2018 | 30 | 51 |
| 2019 | 39 | 71 |
| 2020 | 61 | 82 |
| 2021 | 61 | 128 |
| 2022 | 74 | 154 |
| 2023 | 87 | 141 |
| 2024 | 83 | 106 |
| 2025 | 73 | 77 |
| 2026 | 66 | 60 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2273/30Means for generating a circulation of a fluid in a filtration systemIndexing code656
- B01D 2273/18Testing of filters, filter elements, sealingsIndexing code185
- B01D 2273/20High temperature filtrationIndexing code162
- B01D 2273/28Making use of vacuum or underpressureIndexing code125
- B01D 2273/14Filters which are moved between two or more positionsIndexing code70
- B01D 2273/10Allowing a continuous bypass of at least part of the flowIndexing code69
- B01D 2273/12Influencing the filter cake during filtration using filter aidsIndexing code39
- B01D 2273/26Making use of optical wavesIndexing code25
Recent patents
- Air filtration apparatus and system for providing patient information6 Oct 2026US 12,752,071 B2ResMed Pty Ltd
- Filter unit29 Sep 2026US 12,746,493 B2Samsung Biologics Co., Ltd.
- Air conditioning and filtration system29 Sep 2026US 12,746,502 B2Work Air Technologies Pty Ltd
- Air cleaner29 Sep 2026US 12,747,888 B2LG Electronics Inc.
- Air cleaner15 Sep 2026US 12,736,250 B2LG Electronics Inc.
- Add on auto clean assembly for a vacuum filtration system of a dry bulk trailer and method of using the same8 Oct 2026US 2026/0306984 A1Bulk Tank, Inc.
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- System and method for air decontamination24 Sep 2026US 2026/0284251 A1
- Filter and method for manufacturing same10 Sep 2026US 2026/0263982 A1NGK Insulators, Ltd.
- Method for treating exhaust gas, and facility for carrying out method3 Sep 2026US 2026/0257172 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Air filtration arrangements having fluted media constructions and methods381US 6,673,136 B2Donaldson Company, Inc. · 2004
- Dual mode laser smoke evacuation system with sequential filter monitor and vacuum compensation360US 5,242,474 ASorenson Laboratories, Inc. · 1993
- Smoke evacuator system for use in laser surgery336US 4,701,193 AXanar, Inc. · 1987
- Device and method for monitoring the integrity of filtering installations289US 7,048,775 B2Sartorius AG · 2006
- Method for removing pollutants from a combustor flue gas and system for same199US 5,505,766 AElectric Power Research, Inc. · 1996