A47L 11/34
Machines for treating carpets in position by liquid, foam, or vapour
Official title: Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
A47L11/34 (Machines for treating carpets in position by liquid, foam, or vapour) appears on 992 US grants and 827 published applications in this corpus.
Search patents in A47L- Granted patents
- 992
- Published applications
- 827
- Assignees
- 262
- Inventors
- 1,340
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 10 | 0 |
| 1978 | 23 | 0 |
| 1979 | 19 | 0 |
| 1980 | 16 | 0 |
| 1981 | 10 | 0 |
| 1982 | 16 | 0 |
| 1983 | 6 | 0 |
| 1984 | 10 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 19 | 0 |
| 1990 | 15 | 0 |
| 1991 | 2 | 0 |
| 1992 | 14 | 0 |
| 1993 | 9 | 0 |
| 1994 | 11 | 0 |
| 1995 | 15 | 0 |
| 1996 | 20 | 0 |
| 1997 | 16 | 0 |
| 1998 | 25 | 0 |
| 1999 | 29 | 0 |
| 2000 | 33 | 0 |
| 2001 | 29 | 14 |
| 2002 | 21 | 26 |
| 2003 | 28 | 39 |
| 2004 | 15 | 22 |
| 2005 | 18 | 40 |
| 2006 | 13 | 52 |
| 2007 | 23 | 37 |
| 2008 | 19 | 35 |
| 2009 | 23 | 34 |
| 2010 | 41 | 24 |
| 2011 | 29 | 19 |
| 2012 | 12 | 26 |
| 2013 | 35 | 23 |
| 2014 | 23 | 30 |
| 2015 | 19 | 32 |
| 2016 | 25 | 38 |
| 2017 | 28 | 14 |
| 2018 | 13 | 20 |
| 2019 | 25 | 67 |
| 2020 | 34 | 20 |
| 2021 | 29 | 28 |
| 2022 | 32 | 31 |
| 2023 | 31 | 40 |
| 2024 | 38 | 59 |
| 2025 | 21 | 33 |
| 2026 | 17 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air/liquid separation system for an extraction cleaner29 Sep 2026US 12,745,887 B2BISSELL Inc.
- Surface cleaning apparatus8 Sep 2026US 12,727,731 B2Omachron Intellectual Property Inc.
- Accessory tool with integral cleanout assembly25 Aug 2026US 12,714,280 B2BISSELL Inc.
- Surface cleaning apparatus25 Aug 2026US 12,714,281 B2BISSELL Inc.
- Floor cleaner28 Jul 2026US 12,690,741 B2Techtronic Floor Care Technology Limited
- Extraction cleaner8 Oct 2026US 2026/0305903 A1BISSELL Inc.
- Cleaner and cleaner control method24 Sep 2026US 2026/0283434 A1LG Electronics Inc.
- Surface cleaning apparatus24 Sep 2026US 2026/0283435 A1Omachron Intellectual Property Inc.
- Surface cleaning apparatus with steam delivery17 Sep 2026US 2026/0272242 A1BISSELL Inc.
- Cleaning apparatus roller tool3 Sep 2026US 2026/0256332 A1BISSELL Inc.
Most cited
By later US patents
- Autonomous surface cleaning robot for wet and dry cleaning257US 7,389,156 B2iRobot Corporation · 2008
- Upright extraction cleaning machine240US 6,131,237 ABISSELL Homecare, Inc. · 2000
- Vacuum cleaner with a detachable vacuum module228US 5,309,600 ABISSELL Inc. · 1994
- Autonomous surface cleaning robot for dry cleaning199US 7,620,476 B2iRobot Corporation · 2009
- Hand-held extraction cleaner with turbine-driven brush182US 6,658,693 B1BISSELL Homecare, Inc. · 2003