B01D 46/0049
Containing fixed gas displacement elements or cores
Official title: {containing fixed gas displacement elements or cores}
B01D46/0049 (Containing fixed gas displacement elements or cores) appears on 170 US grants and 229 published applications in this corpus.
Search patents in B01D- Granted patents
- 170
- Published applications
- 229
- Assignees
- 124
- Inventors
- 512
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 6 |
| 2008 | 0 | 1 |
| 2009 | 2 | 0 |
| 2010 | 2 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 4 |
| 2015 | 1 | 1 |
| 2016 | 2 | 3 |
| 2017 | 2 | 3 |
| 2018 | 1 | 5 |
| 2019 | 5 | 9 |
| 2020 | 4 | 11 |
| 2021 | 10 | 29 |
| 2022 | 16 | 69 |
| 2023 | 18 | 32 |
| 2024 | 34 | 22 |
| 2025 | 20 | 10 |
| 2026 | 19 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Aerosol separator; and method83US 6,290,739 B1Donaldson Company, Inc. · 2001
- Filters for purification of gases63US 4,559,066 AProcess Scientific Innovations Limited · 1985
- HEPA filtration system57US 5,290,330 AEnvirco Corporation · 1994
- Air filtration system having a removable diffuser57US 7,753,977 B2Filtration Group Incorporated · 2010
- Disposable HEPA filtration device53US 5,259,854 AGPAC, Inc. · 1993