A47L 11/32
Carpet-sweepers
Official title: Carpet-sweepers (combined with suction cleaners A47L7/02)
A47L11/32 (Carpet-sweepers) appears on 238 US grants and 232 published applications in this corpus.
Search patents in A47L- Granted patents
- 238
- Published applications
- 232
- Assignees
- 95
- Inventors
- 450
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 11 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 5 |
| 2004 | 1 | 14 |
| 2005 | 4 | 17 |
| 2006 | 9 | 10 |
| 2007 | 2 | 7 |
| 2008 | 6 | 8 |
| 2009 | 5 | 6 |
| 2010 | 5 | 13 |
| 2011 | 7 | 10 |
| 2012 | 6 | 10 |
| 2013 | 13 | 13 |
| 2014 | 5 | 14 |
| 2015 | 8 | 5 |
| 2016 | 13 | 8 |
| 2017 | 5 | 14 |
| 2018 | 8 | 11 |
| 2019 | 14 | 8 |
| 2020 | 12 | 7 |
| 2021 | 7 | 13 |
| 2022 | 5 | 7 |
| 2023 | 8 | 7 |
| 2024 | 4 | 9 |
| 2025 | 3 | 9 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Machine for cleaning and sanitizing15 Sep 2026US 12,733,786 B2Santoemma S.R.L.
- Carpet recognition method applicable to robot cleaner3 Jun 2025US 12,318,050 B2Beijing Roborock Innovation Technology Co., Ltd.
- Manual cleaning tool1 Apr 2025US 12,262,856 B2Nippon Seal Co., Ltd.
- Four-direction scrubbing carpet shampooer4 Mar 2025US 12,239,267 B2
- Floor treatment apparatus27 Aug 2024US 12,070,170 B2Kärcher North America, Inc.
- Automatic cleaning devices, control method and storage medium2 Jul 2026US 2026/0182807 A1Beijing Roborock Innovation Technology Co., Ltd.
- Obstacle avoidance control method and apparatus for automatic cleaning device, and storage medium and device4 Jun 2026US 2026/0153874 A1Beijing Roborock Innovation Technology Co., Ltd.
- Cleaning device12 Feb 2026US 2026/0041300 A1Shanghai Zidong Technology Co., Ltd.
- Automatic cleaning apparatus15 Jan 2026US 2026/0013696 A1Beijing Roborock Technology Co., Ltd.
- Cleaning Device1 Jan 2026US 2026/0000264 A1Shanghai Zidong Technology Co., Ltd.
Most cited
By later US patents
- Floor cleaner with dusting170US 7,013,528 B2BISSELL Homecare, Inc. · 2006
- Cleaning members for cleaning areas near walls used in floor cleaner160US 5,794,297 AHoky Contico, L.L.C. · 1998
- Cleaning robot roller processing156US 8,087,117 B2iRobot Corporation · 2012
- Surface treating device with top load cartridge-based cleaning system153US 7,578,020 B2S. C. Johnson & Son, Inc. · 2009
- Sweeping machine146US 6,324,714 B1Alfred Kaercher GmbH & Co. KG · 2001