E04H 4/1663
The propulsion resulting from an intermittent interruption of the waterflow through the
Official title: {the propulsion resulting from an intermittent interruption of the waterflow through the cleaner}
E04H4/1663 (The propulsion resulting from an intermittent interruption of the waterflow through the) appears on 187 US grants and 149 published applications in this corpus.
Search patents in E04H- Granted patents
- 187
- Published applications
- 149
- Assignees
- 74
- Inventors
- 216
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 14 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 1 |
| 2002 | 5 | 5 |
| 2003 | 5 | 3 |
| 2004 | 5 | 10 |
| 2005 | 2 | 6 |
| 2006 | 1 | 4 |
| 2007 | 4 | 8 |
| 2008 | 5 | 9 |
| 2009 | 3 | 6 |
| 2010 | 1 | 4 |
| 2011 | 6 | 10 |
| 2012 | 4 | 3 |
| 2013 | 5 | 8 |
| 2014 | 3 | 7 |
| 2015 | 5 | 11 |
| 2016 | 7 | 4 |
| 2017 | 12 | 7 |
| 2018 | 4 | 9 |
| 2019 | 13 | 6 |
| 2020 | 7 | 5 |
| 2021 | 5 | 7 |
| 2022 | 3 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 5 |
| 2025 | 3 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Water jet reversing propulsion and directional controls for automated swimming pool cleaners110US 6,412,133 B1Aqua Products, Inc. · 2002
- Apparatus for cleaning submerged surfaces88US 4,023,227 A1977
- Valve assembly80US 4,642,833 ACoxwold (Proprietary) Limited · 1987
- Device for cleaning swimming pool sidewall78US 4,429,429 A1984
- Water jet reversing propulsion and directional controls for automated swimming pool cleaners78US 7,900,308 B2Aqua Products, Inc. · 2011