A47L 11/325
Shampoo devices for carpet-sweepers
Official title: {Shampoo devices for carpet-sweepers}
A47L11/325 (Shampoo devices for carpet-sweepers) appears on 13 US grants and 8 published applications in this corpus.
Search patents in A47L- Granted patents
- 13
- Published applications
- 8
- Assignees
- 9
- Inventors
- 33
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Machine for cleaning and sanitizing15 Sep 2026US 12,733,786 B2Santoemma S.R.L.
- Four-direction scrubbing carpet shampooer4 Mar 2025US 12,239,267 B2
- Dual fluid system for floor maintenance machine8 Sep 2020US 10,765,289 B2RPS Corporation
- Dry powder spreader6 May 2008US 7,367,076 B2
- Apparatus having a belt agitator for agitating a cleaning agent into a carpet14 Nov 2000US 6,145,145 AE. I. Du Pont de Nemours and Company
- Floor Cleaning and Drying System21 Aug 2025US 2025/0261815 A1
- Machine for cleaning and sanitizing1 May 2025US 2025/0134334 A1Santoemma S.R.L.
- Surface cleaner31 Oct 2024US 2024/0358204 A1Techtronic Cordless GP
- Battery-powered surface cleaning apparatus4 Apr 2024US 2024/0108188 A1BISSELL Inc.
- Four-direction scrubbing carpet shampooer7 Jan 2021US 2021/0000317 A1
Most cited
By later US patents
- Foam type carpet cleaner23US 5,133,107 A1992
- Mobile foam brush washing system including mixing apparatus for foam generation21US 4,383,935 A1983
- Mixing apparatus for foam generation18US 4,366,081 A1982
- Floor cleaning apparatus15US 4,208,753 A1980
- Method of and apparatus for the cleaning of textiles14US 3,936,199 ALeifheit International Gunter Leifheit GmbH · 1976