E04H 4/1609
Hand-held strainers, non-powered brushes or scrubbers
Official title: {Hand-held strainers, non-powered brushes or scrubbers}
E04H4/1609 (Hand-held strainers, non-powered brushes or scrubbers) appears on 139 US grants and 104 published applications in this corpus.
Search patents in E04H- Granted patents
- 139
- Published applications
- 104
- Assignees
- 28
- Inventors
- 196
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 8 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 2 |
| 2003 | 3 | 2 |
| 2004 | 0 | 4 |
| 2005 | 0 | 3 |
| 2006 | 3 | 1 |
| 2007 | 1 | 1 |
| 2008 | 3 | 2 |
| 2009 | 1 | 2 |
| 2010 | 0 | 3 |
| 2011 | 2 | 1 |
| 2012 | 4 | 5 |
| 2013 | 0 | 4 |
| 2014 | 2 | 6 |
| 2015 | 4 | 1 |
| 2016 | 2 | 8 |
| 2017 | 4 | 6 |
| 2018 | 7 | 8 |
| 2019 | 4 | 9 |
| 2020 | 2 | 7 |
| 2021 | 5 | 4 |
| 2022 | 5 | 3 |
| 2023 | 2 | 4 |
| 2024 | 3 | 7 |
| 2025 | 2 | 5 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Pool skimmer device7 Apr 2026US 12,595,672 B2
- Pool brush assembly with replaceable handle and brush head arrangement3 Mar 2026US 12,565,786 B2Ningbo Bonny E-Home Co., Ltd.
- Pool cleaning device and methods of use3 Feb 2026US 12,540,483 B2
- Adjustable pool cleaning tool10 Jun 2025US 12,326,010 B2
- Pool sweep systems25 Jun 2026US 2026/0174218 A1
- Pool Skimmer Device18 Jun 2026US 2026/0168273 A1
- Pool Brush Assembly with Replaceable Handle with Brush Head Arrangement2 Apr 2026US 2026/0092464 A1Ningbo Bonny E-Home Co., Ltd.
- Quick connection tool handle26 Feb 2026US 2026/0054368 A1
- Pool maintenance tool8 Jan 2026US 2026/0009250 A1
Most cited
By later US patents
- Quick connect handle for swimming pool cleaning tools172US 4,247,216 A1981
- Simplified pool cleaning apparatus61US 4,338,697 A1982
- Device for removing stains from swimming pool walls and concrete and the method of making the same57US 6,180,588 B2Tracey Dalton · 2001
- Object retrieval and grasping device54US 5,941,586 A1999
- In-pool skimmer47US 5,705,058 A1998