A47L 9/0461
Dust-loosening tools
Official title: {Dust-loosening tools, e.g. agitators, brushes}
A47L9/0461 (Dust-loosening tools) appears on 1,120 US grants and 1,537 published applications in this corpus.
Search patents in A47L- Granted patents
- 1,120
- Published applications
- 1,537
- Assignees
- 260
- Inventors
- 1,972
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 3 |
| 2002 | 5 | 11 |
| 2003 | 9 | 11 |
| 2004 | 8 | 16 |
| 2005 | 10 | 26 |
| 2006 | 9 | 15 |
| 2007 | 18 | 12 |
| 2008 | 12 | 28 |
| 2009 | 5 | 15 |
| 2010 | 12 | 25 |
| 2011 | 7 | 12 |
| 2012 | 10 | 32 |
| 2013 | 32 | 41 |
| 2014 | 34 | 52 |
| 2015 | 33 | 57 |
| 2016 | 38 | 68 |
| 2017 | 64 | 119 |
| 2018 | 72 | 100 |
| 2019 | 83 | 102 |
| 2020 | 88 | 97 |
| 2021 | 94 | 130 |
| 2022 | 89 | 111 |
| 2023 | 92 | 132 |
| 2024 | 96 | 133 |
| 2025 | 85 | 105 |
| 2026 | 50 | 84 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hair cutting assembly and cleaning apparatus6 Oct 2026US 12,751,588 B2Jiangsu Midea Cleaning Appliances Co., Ltd.
- Cleaner head for a cleaning appliance22 Sep 2026US 12,740,677 B2Techtronic Floor Care Technology Limited
- Motorized suction head with steam dispensing device22 Sep 2026US 12,740,678 B2New Ermes Europe S.p.A.
- Recovery tank22 Sep 2026US 12,740,683 B2SharkNinja Operating LLC
- Cleaner15 Sep 2026US 12,733,779 B2Samsung Electronics Co., Ltd.
- User-prompted cleaning by autonomous vacuum8 Oct 2026US 2026/0305895 A1Matic Robots, Inc. (fka Matician, Inc.)
- Roller Brush and Cleaning Device1 Oct 2026US 2026/0294090 A1Shenzhen Chenbei Technology Co., Ltd.
- Suction Head Provided With A Rotating Brush Provided With A Cleaning Blade24 Sep 2026US 2026/0283340 A1Seb S. A.
- Hand carryable surface cleaning apparatus24 Sep 2026US 2026/0283417 A1Omachron Intellectual Property Inc.
- Nozzle for a surface treatment apparatus and a surface treatment apparatus having the same3 Sep 2026US 2026/0256331 A1SharkNinja Operating LLC
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
- Debris sensor for cleaning apparatus246US 6,956,348 B2iRobot Corporation · 2005