B01D 46/103
Curved filtering elements
Official title: {Curved filtering elements}
B01D46/103 (Curved filtering elements) appears on 155 US grants and 171 published applications in this corpus.
Search patents in B01D- Granted patents
- 155
- Published applications
- 171
- Assignees
- 113
- Inventors
- 448
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 3 |
| 2003 | 1 | 1 |
| 2004 | 2 | 2 |
| 2005 | 1 | 3 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 5 |
| 2009 | 3 | 3 |
| 2010 | 4 | 5 |
| 2011 | 3 | 4 |
| 2012 | 4 | 1 |
| 2013 | 6 | 10 |
| 2014 | 3 | 8 |
| 2015 | 7 | 8 |
| 2016 | 5 | 7 |
| 2017 | 5 | 9 |
| 2018 | 7 | 11 |
| 2019 | 8 | 13 |
| 2020 | 6 | 6 |
| 2021 | 10 | 14 |
| 2022 | 15 | 15 |
| 2023 | 6 | 14 |
| 2024 | 9 | 12 |
| 2025 | 9 | 6 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filtering element, dust collection pile, and cleaning system8 Sep 2026US 12,728,376 B2Beijing Roborock Technology Co., Ltd.
- Air filtering system for an aircraft12 May 2026US 12,623,174 B2Bmc Co., Ltd.
- Filtration device, filtration method and filtration filter14 Apr 2026US 12,599,854 B2Murata Manufacturing Co., Ltd.
- Adsorption filter structure or purification module and helmet comprising the same31 Mar 2026US 12,589,267 B2Agency for Defense Development
- Air purifier24 Mar 2026US 12,582,932 B2Brother Kogyo Kabushiki Kaisha
- Separator for a fluid cleaning device3 Sep 2026US 2026/0257161 A1Dyson Technology Limited
- Air purifier27 Aug 2026US 2026/0249223 A1Shenzhen Antop Technology Limited
- Vacuum cleaner20 Aug 2026US 2026/0240393 A1
- Vacuum cleaner20 Aug 2026US 2026/0240394 A1
- Hand-held Paint Sprayer and Method for Operating a Hand-Held Paint Sprayer20 Aug 2026US 2026/0241398 A1J. Wagner GmbH
Most cited
By later US patents
- Slanted inline filter319US 5,772,883 ADonaldson Company, Inc. · 1998
- Zigzag filter media and frame having triangular pleat stabilizing elements86US 5,531,892 AMinnesota Mining and Manufacturing Company · 1996
- Fibrous filtration face mask having corrugated polymeric microfiber filter layer86US 5,656,368 AMinnesota Mining and Manufacturing Company · 1997
- Air filtration device84US 6,328,791 B1Hamilton Beach/Proctor-Silex, Inc. · 2001
- Air cleaner element having incorporated sorption element82US 6,152,996 AAir-Maze Corporation · 2000