A47L 5/22
With rotary fans
Official title: with rotary fans
A47L5/22 (With rotary fans) appears on 3,957 US grants and 4,362 published applications in this corpus.
Search patents in A47L- Granted patents
- 3,957
- Published applications
- 4,362
- Assignees
- 732
- Inventors
- 5,102
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 12 | 0 |
| 1978 | 11 | 0 |
| 1979 | 9 | 0 |
| 1980 | 19 | 0 |
| 1981 | 4 | 0 |
| 1982 | 11 | 0 |
| 1983 | 12 | 0 |
| 1984 | 16 | 0 |
| 1985 | 18 | 0 |
| 1986 | 20 | 0 |
| 1987 | 37 | 0 |
| 1988 | 30 | 0 |
| 1989 | 36 | 0 |
| 1990 | 48 | 0 |
| 1991 | 46 | 0 |
| 1992 | 45 | 0 |
| 1993 | 37 | 0 |
| 1994 | 48 | 0 |
| 1995 | 30 | 0 |
| 1996 | 42 | 0 |
| 1997 | 38 | 0 |
| 1998 | 56 | 0 |
| 1999 | 60 | 0 |
| 2000 | 88 | 0 |
| 2001 | 86 | 35 |
| 2002 | 79 | 72 |
| 2003 | 79 | 77 |
| 2004 | 54 | 126 |
| 2005 | 46 | 119 |
| 2006 | 52 | 122 |
| 2007 | 70 | 139 |
| 2008 | 73 | 101 |
| 2009 | 64 | 135 |
| 2010 | 95 | 143 |
| 2011 | 90 | 112 |
| 2012 | 66 | 110 |
| 2013 | 110 | 111 |
| 2014 | 119 | 133 |
| 2015 | 116 | 132 |
| 2016 | 116 | 148 |
| 2017 | 128 | 264 |
| 2018 | 138 | 235 |
| 2019 | 233 | 310 |
| 2020 | 224 | 294 |
| 2021 | 212 | 284 |
| 2022 | 221 | 246 |
| 2023 | 236 | 277 |
| 2024 | 213 | 277 |
| 2025 | 160 | 200 |
| 2026 | 96 | 160 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A47L 5/28Suction cleaners with handles and nozzles fixed on the casings1,771
- A47L 5/24Hand-supported suction cleaners1,297
- A47L 5/36Suction cleaners with hose between nozzle and casing905
- A47L 5/225Convertible suction cleaners, i.e. convertible between different types thereof581
- A47L 5/38Built-in suction cleaner installations, i.e. with fixed tube system to which, at327
Recent patents
- Central vacuum system and inlet valves therefor6 Oct 2026US 12,751,587 B2H-P Products, Inc.
- Cleaning system and cleaning method6 Oct 2026US 12,751,590 B2Pixart Imaging Inc.
- Surface cleaning apparatus29 Sep 2026US 12,745,882 B2Omachron Intellectual Property Inc.
- Brushless motor29 Sep 2026US 12,749,941 B2Dyson Technology Limited
- Dust suction device with storage state15 Sep 2026US 12,733,778 B2X' Pole Precision Tools Inc.
- Vacuum cleaner with two turbines, and operating method for same8 Oct 2026US 2026/0305892 A1Hilti Aktiengesellschaft
- Surface cleaning apparatus and docking station usable therewith8 Oct 2026US 2026/0305893 A1Omachron Intellectual Property Inc.
- User-prompted cleaning by autonomous vacuum8 Oct 2026US 2026/0305895 A1Matic Robots, Inc. (fka Matician, Inc.)
- Surface cleaning apparatus1 Oct 2026US 2026/0294184 A1Omachron Intellectual Property Inc.
- Surface cleaning apparatus1 Oct 2026US 2026/0294189 A1Omachron Intellectual Property Inc.
Most cited
By later US patents
- Air flow-producing device, such as a vacuum cleaner or a blower1,158US 7,712,182 B2Milwaukee Electric Tool Corporation · 2010
- Mobile robots and their control system575US 6,389,329 B12002
- Autonomous floor-cleaning robot453US 6,883,201 B2iRobot Corporation · 2005
- Automatic machine and device for floor dusting439US 5,787,545 A1998
- Cyclonic back-pack vacuum cleaner370US 5,267,371 AIona Appliances Inc. · 1993