E04H 4/1681
Cleaning whips
Official title: {Cleaning whips}
E04H4/1681 (Cleaning whips) appears on 64 US grants and 18 published applications in this corpus.
Search patents in E04H- Granted patents
- 64
- Published applications
- 18
- Assignees
- 16
- Inventors
- 62
- Latest grant
- 23 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 4 | 3 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 2 | 1 |
| 2016 | 2 | 0 |
| 2017 | 0 | 2 |
| 2018 | 2 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Tail sweep spray diffuser for pool cleaner23 Jan 2024US 11,879,263 B2Eruptech LLC
- Rotating tail brush for pool cleaner22 Mar 2022US 11,280,101 B2
- Pool water filtration system1 Jan 2019US 10,167,651 B2
- Free spinning sweep tail scrubber for a pool cleaner10 Apr 2018US 9,938,744 B2Pentair Water Pool and Spa, Inc.
- In-floor pool cleaning system13 Feb 2018US 9,890,548 B2Blue Square Manufacturing, LLC
- Tail sweep spray diffuser for pool cleaner13 Feb 2020US 2020/0047196 A1Eruptech LLC
- Apparatus for removing surface pollutants and bottom muck from a body of water23 Jan 2020US 2020/0024815 A1
- Rotating tail brush for pool cleaner19 Oct 2017US 2017/0298645 A1
- Pool water filtration system29 Jun 2017US 2017/0183885 A1
- In-floor pool cleaning system19 Nov 2015US 2015/0330094 A1Blue Square MFG
Most cited
By later US patents
- Positive pressure automatic swimming pool cleaning system83US 6,365,039 B12002
- Cleaning system for swimming pools and the like72US 4,907,610 ACrystal Pools, Inc. · 1990
- Swimming pool cleaning method and apparatus68US 4,449,260 A1984
- Automatic pool cleaner including motion sensor and repositioning means63US 6,398,878 B12002
- Device and method for cleaning leaves and debris from swimming pools56US 4,040,864 A1977