A47L 9/181
Separating by passing the air through a liquid bath
Official title: {Separating by passing the air through a liquid bath}
A47L9/181 (Separating by passing the air through a liquid bath) appears on 53 US grants and 34 published applications in this corpus.
Search patents in A47L- Granted patents
- 53
- Published applications
- 34
- Assignees
- 28
- Inventors
- 87
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 2 | 4 |
| 2006 | 0 | 2 |
| 2007 | 3 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 6 |
| 2013 | 0 | 0 |
| 2014 | 3 | 2 |
| 2015 | 1 | 1 |
| 2016 | 2 | 3 |
| 2017 | 2 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 2 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 3 | 4 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cleaning device and use7 Apr 2026US 12,593,949 B2ReBerni Limited
- Pet cleaning and treatment apparatus and method6 Jan 2026US 12,514,225 B2
- Anti-bacterial cleaning machine with wet filter14 Oct 2025US 12,440,077 B2T.P.A. Impex S.p.A.
- Separator for vacuum cleaner26 Jul 2022US 11,395,570 B2Hyla, Proizvodnja, Razvoj In Trgovina D.O.O.
- Vacuum assemblies and methods31 May 2022US 11,344,169 B2Rexair, Inc.
- Pet Cleaning and Treatment Apparatus and Method2 Jan 2025US 2025/0000055 A1
- Cleaning device and use30 Nov 2023US 2023/0380646 A1ReBerni Limited
- Anti-bacterial cleaning machine with wet filter24 Nov 2022US 2022/0369876 A1T.P.A. Impex S.p.A.
- Vacuum assemblies and methods8 Sep 2022US 2022/0280002 A1
- Multifunction machine for cleaning and sanitizing surfaces and environments16 Jun 2022US 2022/0183518 A1
Most cited
By later US patents
- Clean air vacuum cleaners98US 5,481,780 A1996
- Ultra-filtration vacuum system72US 5,922,093 AMiracle Marketing Corporation · 1999
- Vacuum cleaner having a liquid medium filter63US 5,205,014 A1993
- Vacuum cleaner with two stage filtration63US 8,117,713 B2BISSELL Homecare, Inc. · 2012
- Vacuum cleaner51US 4,547,206 ARoyal Appliance Mfg. Co. · 1985