E04H 4/1672
Connections to the pool water circulation system
Official title: {Connections to the pool water circulation system}
E04H4/1672 (Connections to the pool water circulation system) appears on 79 US grants and 96 published applications in this corpus.
Search patents in E04H- Granted patents
- 79
- Published applications
- 96
- Assignees
- 29
- Inventors
- 122
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 3 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 0 | 4 |
| 2014 | 2 | 5 |
| 2015 | 4 | 9 |
| 2016 | 3 | 2 |
| 2017 | 6 | 13 |
| 2018 | 11 | 8 |
| 2019 | 8 | 9 |
| 2020 | 6 | 3 |
| 2021 | 7 | 7 |
| 2022 | 4 | 5 |
| 2023 | 3 | 2 |
| 2024 | 2 | 5 |
| 2025 | 2 | 2 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pool hose air evacuation module26 May 2026US 12,638,120 B2Splash Pool & Spa, Inc.
- Power supplies for pool and spa equipment6 Jan 2026US 12,516,535 B2Hayward Industries, Inc.
- Bypass mechanism for automatic pool cleaners6 May 2025US 12,292,751 B2Zodiac Pool Systems LLC
- Swimming pool cleaner water surface diverter4 Feb 2025US 12,215,518 B2Kreepy Krauly Australia Pty Ltd
- Automatic pool cleaner20 Aug 2024US 12,065,856 B2
- Multi-functional docking station for pool cleaner1 Oct 2026US 2026/0297971 A1Zodiac Pool Care Europe
- Power Supplies for Pool and Spa Equipment14 May 2026US 2026/0132650 A1Hayward Industries, Inc.
- Pool cleaning robot29 Jan 2026US 2026/0028847 A1Xingmai Innovation Technology (Suzhou) Co., Ltd.
- Series-parallel fluid switching structure, fluid pump, and pool cleaner29 Jan 2026US 2026/0029057 A1Ningbo Junhe Intelligent Technology Co., Ltd
- Pool cleaning robot with removable filter and impeller15 Jan 2026US 2026/0015880 A1Maytronics Ltd.
Most cited
By later US patents
- Cleaner device for swimming pools and the like93US 5,172,445 A1992
- Cleaning system for swimming pools and the like72US 4,907,610 ACrystal Pools, Inc. · 1990
- Pool cleaner59US 6,665,900 B2Polaris Pool Systems, Inc. · 2003
- Apparatus for automatic cleaning particularly of the bottom of a swimming pool42US 4,835,809 A1989
- Automatic swimming pool cleaners and associated components38US 5,546,982 ABaracuda International Corporation · 1996