A47L 11/403
Means for monitoring filtering operation
Official title: {Means for monitoring filtering operation}
A47L11/403 (Means for monitoring filtering operation) appears on 23 US grants and 23 published applications in this corpus.
Search patents in A47L- Granted patents
- 23
- Published applications
- 23
- Assignees
- 16
- Inventors
- 45
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 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 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 2 | 8 |
| 2022 | 2 | 1 |
| 2023 | 3 | 2 |
| 2024 | 3 | 2 |
| 2025 | 2 | 3 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Self-actuated cleaning head for an autonomous vacuum21 Jul 2026US 12,685,418 B2Matic Robots, Inc.
- Waste bag with absorbent dispersion sachet2 Jun 2026US 12,642,407 B2Matic Robots, Inc.
- Stationary service appliance for a poly functional roaming device10 Feb 2026US 12,547,189 B2AI Incorporated
- Mapping an environment around an autonomous vacuum7 Oct 2025US 12,433,463 B2Matic Robots, Inc.
- Stationary service appliance for a poly functional roaming device22 Apr 2025US 12,282,342 B2AI Incorporated
- User-prompted cleaning by autonomous vacuum8 Oct 2026US 2026/0305895 A1Matic Robots, Inc. (fka Matician, Inc.)
- Mapping an environment around an autonomous vacuum5 Feb 2026US 2026/0033688 A1Matic Robots, Inc.
- Surface maintenance machines having visual indicia for maintenance intervals18 Sep 2025US 2025/0288174 A1Tennant Company
- Stationary service appliance for a poly functional roaming device4 Sep 2025US 2025/0278096 A1AI Incorporated
- Self-actuated cleaning head for an autonomous vacuum20 Mar 2025US 2025/0089963 A1Matic Robots, Inc.
Most cited
By later US patents
- Mobile work robot system511US 5,959,423 AMinolta Co., Ltd. · 1999
- Method for diagnosing, cleaning and preserving carpeting and other fabrics109US 6,030,464 A2000
- Electromagnetic filter cleaning system45US 6,117,200 ATennant Company · 2000
- Scrubbing machine with liquid recirculation39US 4,464,810 AThe Scott Fetzer Company · 1984
- Collection system for a floor polishing machine27US 5,974,626 ANilfisk-Advance, Inc. · 1999