E04H 4/16
Specially adapted for cleaning
Official title: specially adapted for cleaning
E04H4/16 (Specially adapted for cleaning) appears on 1,457 US grants and 1,434 published applications in this corpus.
Search patents in E04H- Granted patents
- 1,457
- Published applications
- 1,434
- Assignees
- 347
- Inventors
- 1,534
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 14 | 0 |
| 1978 | 11 | 0 |
| 1979 | 12 | 0 |
| 1980 | 15 | 0 |
| 1981 | 9 | 0 |
| 1982 | 10 | 0 |
| 1983 | 7 | 0 |
| 1984 | 14 | 0 |
| 1985 | 17 | 0 |
| 1986 | 13 | 0 |
| 1987 | 19 | 0 |
| 1988 | 26 | 0 |
| 1989 | 24 | 0 |
| 1990 | 18 | 0 |
| 1991 | 15 | 0 |
| 1992 | 22 | 0 |
| 1993 | 17 | 0 |
| 1994 | 24 | 0 |
| 1995 | 28 | 0 |
| 1996 | 12 | 0 |
| 1997 | 12 | 0 |
| 1998 | 24 | 0 |
| 1999 | 28 | 0 |
| 2000 | 30 | 0 |
| 2001 | 25 | 5 |
| 2002 | 27 | 14 |
| 2003 | 21 | 21 |
| 2004 | 18 | 41 |
| 2005 | 19 | 32 |
| 2006 | 20 | 37 |
| 2007 | 19 | 34 |
| 2008 | 22 | 40 |
| 2009 | 19 | 29 |
| 2010 | 17 | 23 |
| 2011 | 20 | 55 |
| 2012 | 29 | 35 |
| 2013 | 44 | 48 |
| 2014 | 34 | 57 |
| 2015 | 44 | 57 |
| 2016 | 42 | 51 |
| 2017 | 58 | 84 |
| 2018 | 78 | 93 |
| 2019 | 78 | 71 |
| 2020 | 66 | 74 |
| 2021 | 60 | 56 |
| 2022 | 48 | 56 |
| 2023 | 45 | 62 |
| 2024 | 48 | 114 |
| 2025 | 63 | 117 |
| 2026 | 63 | 128 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pool robot6 Oct 2026US 12,753,620 B2Xingmai Innovation Technology (Suzhou) Co., Ltd.
- Pool cleaning robot water temperature estimation6 Oct 2026US 12,754,079 B2Maytronics Ltd.
- Pool robot and automatic underwater spreading method29 Sep 2026US 12,747,601 B2Xingmai Innovation Technology (Suzhou) Co., Ltd.
- Automatic swimming pool cleaners especially adept at climbing and cleaning pool stairs29 Sep 2026US 12,747,604 B2Zodiac Pool Systems LLC
- Automatic swimming pool cleaners especially adept at climbing and cleaning pool stairs29 Sep 2026US 12,747,605 B2Zodiac Pool Systems LLC
- Underwater robot drive structure and underwater robot8 Oct 2026US 2026/0308931 A1Seauto (Guangdong Hengqin) Technology Co., Ltd.
- Method for controlling pool robot to operate, electronic device, and storage medium8 Oct 2026US 2026/0310198 A1Xingmai Innovation Technology (Suzhou) Co., Ltd.
- Method, system, and medium for cleaning a swimming pool wall8 Oct 2026US 2026/0310222 A1Seauto (Guangdong Hengqin) Technology Co., Ltd.
- Pool system with message diagnostics for pool cleaner1 Oct 2026US 2026/0294195 A1Zodiac Pool Care Europe
- Cleaning device1 Oct 2026US 2026/0296920 A1
Most cited
By later US patents
- Self-powered pool vacuum with remote controlled capabilities278US 5,454,129 A1995
- Quick connect handle for swimming pool cleaning tools172US 4,247,216 A1981
- Pool cleaner directional control method and apparatus155US 6,299,699 B1Aqua Products, Inc. · 2001
- Traction enhanced wheel apparatus147US 6,099,091 ALetro Products, Inc. · 2000
- Tether-guided vehicle and method of controlling same145US 4,967,862 ATransitions Research Corporation · 1990