A47L 11/29
Floor-scrubbing machines characterised by means for taking-up dirty liquid
A47L11/29 (Floor-scrubbing machines characterised by means for taking-up dirty liquid) appears on 1,015 US grants and 1,147 published applications in this corpus.
Search patents in A47L- Granted patents
- 1,015
- Published applications
- 1,147
- Assignees
- 307
- Inventors
- 1,776
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 3 | 0 |
| 1979 | 11 | 0 |
| 1980 | 9 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 8 | 0 |
| 1984 | 7 | 0 |
| 1985 | 6 | 0 |
| 1986 | 9 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 15 | 0 |
| 1990 | 14 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 11 | 0 |
| 1995 | 12 | 0 |
| 1996 | 12 | 0 |
| 1997 | 17 | 0 |
| 1998 | 18 | 0 |
| 1999 | 31 | 0 |
| 2000 | 31 | 0 |
| 2001 | 15 | 8 |
| 2002 | 14 | 22 |
| 2003 | 15 | 17 |
| 2004 | 10 | 13 |
| 2005 | 8 | 21 |
| 2006 | 11 | 19 |
| 2007 | 11 | 21 |
| 2008 | 9 | 34 |
| 2009 | 6 | 23 |
| 2010 | 18 | 15 |
| 2011 | 21 | 19 |
| 2012 | 18 | 26 |
| 2013 | 26 | 22 |
| 2014 | 24 | 26 |
| 2015 | 20 | 31 |
| 2016 | 22 | 25 |
| 2017 | 23 | 42 |
| 2018 | 23 | 36 |
| 2019 | 35 | 90 |
| 2020 | 50 | 59 |
| 2021 | 70 | 104 |
| 2022 | 64 | 79 |
| 2023 | 68 | 88 |
| 2024 | 70 | 133 |
| 2025 | 41 | 96 |
| 2026 | 35 | 78 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cleaning apparatus6 Oct 2026US 12,751,596 B2Suzhou Eup Electric Co. Ltd.
- Cleaning apparatus29 Sep 2026US 12,745,885 B2Beijing Roborock Technology Co., Ltd.
- Air/liquid separation system for an extraction cleaner29 Sep 2026US 12,745,887 B2BISSELL Inc.
- Recovery tank22 Sep 2026US 12,740,683 B2SharkNinja Operating LLC
- Floor cleaning machine8 Sep 2026US 12,727,730 B2Hako GmbH
- Residual-water-stain recovery method and apparatus, robot, and storage medium8 Oct 2026US 2026/0305897 A1Shenzhen Pudu Technology Co., Ltd.
- Extraction cleaner8 Oct 2026US 2026/0305903 A1BISSELL Inc.
- Stationary service appliance for a poly functional roaming device8 Oct 2026US 2026/0310224 A1AI Incorporated
- Autonomous Vacuum Sweeping System Having a Brush Roller with Buffer Zone1 Oct 2026US 2026/0294091 A1Matic Robots, Inc.
- Floor cleaner with a low power mode1 Oct 2026US 2026/0294193 A1Techtronic Floor Care Technology Limited
Most cited
By later US patents
- Mobile work robot system511US 5,959,423 AMinolta Co., Ltd. · 1999
- Automatic controlled cleaning machine361US 5,279,672 AWindsor Industries, Inc. · 1994
- Autonomous surface cleaning robot for wet and dry cleaning295US 7,761,954 B2iRobot Corporation · 2010
- Autonomous mobile surface treating apparatus289US 6,481,515 B1The Procter & Gamble Company · 2002
- Autonomous surface cleaning robot for wet and dry cleaning257US 7,389,156 B2iRobot Corporation · 2008