F26B 21/003
Air or gas filters
Official title: {Air or gas filters}
F26B21/003 (Air or gas filters) appears on 113 US grants and 119 published applications in this corpus.
Search patents in F26B- Granted patents
- 113
- Published applications
- 119
- Assignees
- 62
- Inventors
- 199
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 2 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 17 |
| 2014 | 4 | 15 |
| 2015 | 7 | 6 |
| 2016 | 12 | 4 |
| 2017 | 10 | 4 |
| 2018 | 6 | 5 |
| 2019 | 3 | 5 |
| 2020 | 7 | 8 |
| 2021 | 9 | 7 |
| 2022 | 4 | 2 |
| 2023 | 5 | 6 |
| 2024 | 5 | 10 |
| 2025 | 7 | 11 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vehicle-mounted in-situ magnetic field decontamination device for heavy metal contaminated soil with retractable baffle26 May 2026US 12,636,688 B2Institute of Soil Science, CAS
- Finishing apparatus for a spray drying system10 Mar 2026US 12,571,587 B2Velico Medical, Inc.
- Disposable for a spray drying system27 Jan 2026US 12,533,603 B2Velico Medical, Inc.
- Dried plasma system27 Jan 2026US 12,533,604 B2Velico Medical, Inc.
- Spray drying system27 Jan 2026US 12,535,269 B2Velico Medical, Inc.
- Finishing Apparatus For A Spray Drying System27 Aug 2026US 2026/0251391 A1Velico Medical, Inc.
- Nozzle For A Spray Drying System14 May 2026US 2026/0131258 A1Velico Medical, Inc.
- Dried Plasma Methods30 Apr 2026US 2026/0115622 A1Velico Medical, Inc.
- Disposable For A Spray Drying System30 Apr 2026US 2026/0118054 A1Velico Medical, Inc.
- Intake duct structure for low dryer and blow dryer30 Apr 2026US 2026/0118058 A1Shenzhen Petaboo Technology Co., Ltd.
Most cited
By later US patents
- Vertical heat treating apparatus359US 5,261,167 ATokyo Electron Sagami Limited · 1993
- Method and apparatus for maintaining clean articles113US 5,351,415 AConvey, LLC · 1994
- Hand dryer with sanitizing ionization assembly58US 9,421,291 B2Fifth Third Bank · 2016
- Automated air filtration and drying system for waterborne paint and industrial coatings36US 6,035,551 AOptimum Air Corporation · 2000
- Blow dryer air filter35US 5,216,822 A1993