A47L 11/4041
Roll shaped surface treating tools
Official title: {Roll shaped surface treating tools}
A47L11/4041 (Roll shaped surface treating tools) appears on 902 US grants and 1,084 published applications in this corpus.
Search patents in A47L- Granted patents
- 902
- Published applications
- 1,084
- Assignees
- 306
- Inventors
- 1,686
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 7 | 0 |
| 1985 | 8 | 0 |
| 1986 | 10 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 3 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 7 | 0 |
| 1997 | 12 | 0 |
| 1998 | 14 | 0 |
| 1999 | 10 | 0 |
| 2000 | 14 | 0 |
| 2001 | 10 | 5 |
| 2002 | 2 | 10 |
| 2003 | 9 | 8 |
| 2004 | 5 | 18 |
| 2005 | 9 | 27 |
| 2006 | 13 | 27 |
| 2007 | 9 | 16 |
| 2008 | 8 | 27 |
| 2009 | 9 | 22 |
| 2010 | 14 | 21 |
| 2011 | 19 | 16 |
| 2012 | 11 | 25 |
| 2013 | 31 | 26 |
| 2014 | 25 | 42 |
| 2015 | 21 | 24 |
| 2016 | 37 | 43 |
| 2017 | 23 | 39 |
| 2018 | 34 | 49 |
| 2019 | 41 | 87 |
| 2020 | 52 | 56 |
| 2021 | 78 | 109 |
| 2022 | 53 | 70 |
| 2023 | 65 | 72 |
| 2024 | 67 | 99 |
| 2025 | 38 | 75 |
| 2026 | 25 | 71 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hair cutting assembly and cleaning apparatus6 Oct 2026US 12,751,588 B2Jiangsu Midea Cleaning Appliances Co., Ltd.
- Cleaning apparatus6 Oct 2026US 12,751,596 B2Suzhou Eup Electric Co. Ltd.
- Surface cleaning system, surface cleaning device and control method thereof22 Sep 2026US 12,740,638 B2Tineco Intelligent Technology Co., Ltd.
- Anti-tangle roller brush, roller brush mechanism and sweeping robot15 Sep 2026US 12,733,785 B2Linksmart Technology (Zhongshan) Co., Ltd.
- Floor cleaning machine and method for operating a floor cleaning machine8 Sep 2026US 12,727,727 B2Alfred Kärcher GmbH & Co. KG
- User-prompted cleaning by autonomous vacuum8 Oct 2026US 2026/0305895 A1Matic Robots, Inc. (fka Matician, Inc.)
- Method for controlling robot cleaner, and robot cleaner8 Oct 2026US 2026/0305901 A1Beijing Roborock Innovation Technology Co., Ltd.
- Roller Brush and Cleaning Device1 Oct 2026US 2026/0294090 A1Shenzhen Chenbei Technology Co., Ltd.
- Surface cleaning apparatus24 Sep 2026US 2026/0283435 A1Omachron Intellectual Property Inc.
- Cleaning assembly and cleaning apparatus having same17 Sep 2026US 2026/0272247 A1Qufu Sinodod Smart Technology Co., Ltd.
Most cited
By later US patents
- Autonomous surface cleaning robot for wet and dry cleaning295US 7,761,954 B2iRobot Corporation · 2010
- Autonomous surface cleaning robot for wet and dry cleaning257US 7,389,156 B2iRobot Corporation · 2008
- Coverage robot mobility237US 7,441,298 B2iRobot Corporation · 2008
- Combined sweeper and scrubber224US 5,093,955 ATennant Company · 1992
- Mobile surface cleaning machine201US 5,239,720 AAdvance Machine Company · 1993