A47L 11/4022
With means for recycling the dirty liquid
Official title: {with means for recycling the dirty liquid (treatment of waste water C02F)}
A47L11/4022 (With means for recycling the dirty liquid) appears on 67 US grants and 64 published applications in this corpus.
Search patents in A47L- Granted patents
- 67
- Published applications
- 64
- Assignees
- 46
- Inventors
- 176
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 3 |
| 2013 | 4 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 1 | 2 |
| 2017 | 0 | 3 |
| 2018 | 3 | 7 |
| 2019 | 1 | 2 |
| 2020 | 5 | 3 |
| 2021 | 5 | 9 |
| 2022 | 2 | 3 |
| 2023 | 2 | 1 |
| 2024 | 0 | 7 |
| 2025 | 1 | 8 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Docking station for cleaning robot and cleaning system24 Feb 2026US 12,557,961 B1TP-Link Systems Inc.
- Surface cleaning apparatus and tray4 Feb 2025US 12,213,633 B2BISSELL Inc.
- Surface cleaning apparatus10 Oct 2023US 11,779,182 B1BISSELL Inc.
- Floor cleaning machine with solid chemical delivery system5 Sep 2023US 11,744,427 B2Betco Corporation
- Cleaner and control method thereof4 Oct 2022US 11,457,791 B2LG Electronics Inc.
- Cleaning apparatus with liquid and solid debris sorting recovery tank assembly4 Jun 2026US 2026/0151014 A1BISSELL Inc.
- Transversing mopping mechanism7 May 2026US 2026/0123810 A1Hangzhou Shunshi Technology Co., Ltd.
- Liquid level detection apparatus, sewage tank having liquid level detection apparatus, and cleaning device26 Feb 2026US 2026/0053306 A1Shanghai Zidong Technology Co., Ltd.
- Docking station for cleaning robot and cleaning system26 Feb 2026US 2026/0053323 A1TP-Link Systems Inc.
- Docking station for a cleaning robot and cleaning system26 Feb 2026US 2026/0053325 A1TP-Link Systems Inc.
Most cited
By later US patents
- Combined sweeper and scrubber224US 5,093,955 ATennant Company · 1992
- Scrubber vac-fan seal158US 5,943,730 ATennant Company · 1999
- Vacuum cleaner attachment for the wet cleaning of surfaces123US 6,021,545 AVorwerk & Co. Interholding GmbH · 2000
- Tank for autonomous running and working vehicle111US 6,012,618 AMinolta Co., Ltd. · 2000
- Floor scrubber with recycled cleaning solution82US 5,331,713 AWhite Consolidated Industries, Inc. · 1994