B01D 2259/45
Gas separation or purification devices adapted for specific applications
B01D2259/45 (Gas separation or purification devices adapted for specific applications) appears on 3,029 US grants and 3,627 published applications in this corpus.
Search patents in B01D- Granted patents
- 3,029
- Published applications
- 3,627
- Assignees
- 1,617
- Inventors
- 6,874
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 8 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 7 | 0 |
| 1985 | 17 | 0 |
| 1986 | 11 | 0 |
| 1987 | 6 | 0 |
| 1988 | 18 | 0 |
| 1989 | 17 | 0 |
| 1990 | 11 | 0 |
| 1991 | 5 | 0 |
| 1992 | 16 | 0 |
| 1993 | 13 | 0 |
| 1994 | 16 | 0 |
| 1995 | 14 | 0 |
| 1996 | 23 | 0 |
| 1997 | 26 | 0 |
| 1998 | 46 | 0 |
| 1999 | 45 | 0 |
| 2000 | 40 | 0 |
| 2001 | 36 | 23 |
| 2002 | 46 | 45 |
| 2003 | 54 | 54 |
| 2004 | 56 | 74 |
| 2005 | 39 | 83 |
| 2006 | 45 | 85 |
| 2007 | 43 | 74 |
| 2008 | 55 | 87 |
| 2009 | 48 | 97 |
| 2010 | 74 | 95 |
| 2011 | 61 | 116 |
| 2012 | 74 | 135 |
| 2013 | 97 | 125 |
| 2014 | 80 | 126 |
| 2015 | 125 | 173 |
| 2016 | 130 | 170 |
| 2017 | 149 | 193 |
| 2018 | 157 | 196 |
| 2019 | 172 | 235 |
| 2020 | 173 | 227 |
| 2021 | 180 | 278 |
| 2022 | 193 | 225 |
| 2023 | 190 | 246 |
| 2024 | 159 | 169 |
| 2025 | 132 | 169 |
| 2026 | 77 | 127 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2259/4566For use in transportation meansIndexing code1,067
- B01D 2259/4508For cleaning air in buildingsIndexing code632
- B01D 2259/4533For medical purposesIndexing code591
- B01D 2259/4516For fuel vapour recovery systemsIndexing code445
- B01D 2259/4541For portable useIndexing code360
- B01D 2259/455For transportable useIndexing code284
- B01D 2259/4525For storage and dispensing systemsIndexing code226
- B01D 2259/4583For removing chemical, biological and nuclear warfare agentsIndexing code85
All 9 subgroupsShow fewer
Recent patents
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit6 Oct 2026US 12,752,136 B2Dräger Safety AG & Co. KGaA
- Exhaust gas purification device and method for manufacturing exhaust gas purification device29 Sep 2026US 12,746,533 B2Cataler Corporation
- Dehumidification unit and desiccant drum therein29 Sep 2026US 12,747,872 B2Trane International Inc.
- Scalable cabin system for spot processing of a surface, mobile cabin, and method hereto15 Sep 2026US 12,734,564 B2We Link You Aps
- Vehicle, fleet, and method for treating environment air15 Sep 2026US 12,734,886 B2MANN+HUMMEL Ventures Pte. Ltd.
- Filter system for the removal of volatile organosulfur compounds (voscs) from indoor air8 Oct 2026US 2026/0306980 A1Air Tech Group, SLU
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295522 A1Boston Scientific Scimed, Inc.
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295523 A1Boston Scientific Scimed, Inc.
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295524 A1Boston Scientific Scimed, Inc.
- Removal of atmospheric pollutants from gas, related apparatus, processes and uses thereof24 Sep 2026US 2026/0284589 A1Intelligent Abatement, LLC
Most cited
By later US patents
- Portable oxygen concentration system and method of using the same310US 6,651,658 B1SeQual Technologies, Inc. · 2003
- Smoke plume evacuation filtration system295US 6,585,791 B12003
- Methods and sensors for the detection of active carbon filters degradation with EMIS-ECIS PWAS249US 8,814,996 B2University of South Carolina · 2014
- Portable oxygen concentration system and method of using the same223US 6,691,702 B2SeQual Technologies, Inc. · 2004
- Rapid cycle pressure swing adsorption oxygen concentration method and apparatus193US 5,827,358 AImpact MST, Incorporation · 1998