A47L 9/1409
Rigid filtering receptacles
Official title: {Rigid filtering receptacles (dust collecting receptacles for cyclones A47L9/1683)}
A47L9/1409 (Rigid filtering receptacles) appears on 356 US grants and 509 published applications in this corpus.
Search patents in A47L- Granted patents
- 356
- Published applications
- 509
- Assignees
- 142
- Inventors
- 866
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 7 |
| 2003 | 4 | 7 |
| 2004 | 3 | 13 |
| 2005 | 6 | 14 |
| 2006 | 5 | 5 |
| 2007 | 8 | 7 |
| 2008 | 7 | 9 |
| 2009 | 8 | 4 |
| 2010 | 1 | 7 |
| 2011 | 3 | 5 |
| 2012 | 2 | 4 |
| 2013 | 5 | 8 |
| 2014 | 8 | 6 |
| 2015 | 10 | 9 |
| 2016 | 5 | 10 |
| 2017 | 14 | 44 |
| 2018 | 16 | 22 |
| 2019 | 33 | 27 |
| 2020 | 16 | 60 |
| 2021 | 24 | 40 |
| 2022 | 41 | 50 |
| 2023 | 33 | 50 |
| 2024 | 35 | 43 |
| 2025 | 29 | 28 |
| 2026 | 23 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Vehicle interior cleaning apparatus1 Oct 2026US 2026/0296377 A1
- Dirt separator24 Sep 2026US 2026/0283421 A1Dyson Technology Limited
- Vacuum cleaner27 Aug 2026US 2026/0248334 A1
- Surface cleaning apparatus20 Aug 2026US 2026/0240382 A1Omachron Intellectual Property Inc.
Most cited
By later US patents
- Autonomous floor-cleaning robot453US 6,883,201 B2iRobot Corporation · 2005
- Autonomous floor cleaning robot349US 7,636,982 B2iRobot Corporation · 2009
- Autonomous floor-cleaning robot331US 7,571,511 B2iRobot Corporation · 2009
- Autonomous floor cleaning robot322US 7,448,113 B2iRobert Corporation · 2008
- Dirt container for a surface cleaning apparatus and method of use146US 7,329,294 B2Polar Light Limited · 2008