E04H 4/1636
Suction cleaners
Official title: {Suction cleaners}
E04H4/1636 (Suction cleaners) appears on 297 US grants and 235 published applications in this corpus.
Search patents in E04H- Granted patents
- 297
- Published applications
- 235
- Assignees
- 97
- Inventors
- 392
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 0 |
| 2002 | 5 | 0 |
| 2003 | 1 | 3 |
| 2004 | 2 | 6 |
| 2005 | 5 | 10 |
| 2006 | 4 | 12 |
| 2007 | 5 | 8 |
| 2008 | 7 | 4 |
| 2009 | 3 | 5 |
| 2010 | 4 | 1 |
| 2011 | 2 | 7 |
| 2012 | 4 | 4 |
| 2013 | 4 | 5 |
| 2014 | 2 | 6 |
| 2015 | 7 | 7 |
| 2016 | 5 | 11 |
| 2017 | 8 | 17 |
| 2018 | 18 | 18 |
| 2019 | 15 | 12 |
| 2020 | 13 | 17 |
| 2021 | 15 | 16 |
| 2022 | 13 | 12 |
| 2023 | 13 | 18 |
| 2024 | 8 | 16 |
| 2025 | 16 | 12 |
| 2026 | 14 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automatic swimming pool cleaners especially adept at climbing and cleaning pool stairs29 Sep 2026US 12,747,604 B2Zodiac Pool Systems LLC
- Underwater cleaner8 Sep 2026US 12,729,554 B2
- Apparatus and method for cleaning a surface with a fluid25 Aug 2026US 12,716,255 B1
- Liquid-submersible vacuum system and components thereof28 Jul 2026US 12,692,715 B2
- Pool hose air evacuation module26 May 2026US 12,638,120 B2Splash Pool & Spa, Inc.
- Pool cleaner18 Jun 2026US 2026/0168274 A1Ningbo Junhe Intelligent Technology Co., Ltd
- Pool cleaner14 May 2026US 2026/0132647 A1
- Floating device and swimming pool cleaning robot26 Mar 2026US 2026/0085537 A1COCLEAN Technologies, Co., Ltd.
- Double-Impeller Leaf Collector19 Mar 2026US 2026/0078597 A1Cixi Hengsheng Swimming Pool Supplies Co., Ltd
- Sideways movement method for pool cleaning apparatus and corresponding pool cleaning apparatus12 Feb 2026US 2026/0043261 A1Aiper Global Pte. Ltd.
Most cited
By later US patents
- Water suction powered automatic swimming pool cleaning system126US 6,280,611 B12001
- Automatic swimming pool cleaning system99US 5,985,156 A1999
- Manually propelled pool cleaner88US 5,842,243 AAqua Products, Inc. · 1998
- Pool vacuum73US 4,692,956 A1987
- Cleaning system for swimming pools and the like72US 4,907,610 ACrystal Pools, Inc. · 1990