E04H 4/129
Systems for heating the water content of swimming pools
Official title: {Systems for heating the water content of swimming pools (solar collectors using pools F24S10/17, F24S10/10; by solar radiation F24S20/02)}
E04H4/129 (Systems for heating the water content of swimming pools) appears on 193 US grants and 252 published applications in this corpus.
Search patents in E04H- Granted patents
- 193
- Published applications
- 252
- Assignees
- 78
- Inventors
- 359
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 2 | 1 |
| 2003 | 3 | 3 |
| 2004 | 1 | 4 |
| 2005 | 2 | 3 |
| 2006 | 2 | 3 |
| 2007 | 1 | 6 |
| 2008 | 2 | 4 |
| 2009 | 1 | 3 |
| 2010 | 3 | 5 |
| 2011 | 4 | 5 |
| 2012 | 2 | 7 |
| 2013 | 3 | 11 |
| 2014 | 2 | 9 |
| 2015 | 6 | 12 |
| 2016 | 9 | 11 |
| 2017 | 7 | 23 |
| 2018 | 6 | 6 |
| 2019 | 15 | 13 |
| 2020 | 7 | 15 |
| 2021 | 18 | 11 |
| 2022 | 9 | 19 |
| 2023 | 12 | 28 |
| 2024 | 6 | 18 |
| 2025 | 13 | 22 |
| 2026 | 13 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Valve manifold for a pool environment control system29 Sep 2026US 12,747,602 B2PoolAire, Inc.
- Spa shell for a spa having thermally insulated sections8 Sep 2026US 12,729,553 B2Masterspas, LLC
- Bathing control system25 Aug 2026US 12,719,243 B2Safety Tubs Company, LLC
- System and a method for changing color of pool lights11 Aug 2026US 12,705,960 B2Pentair Water Pool and Spa, Inc.
- Electrical post for use with a pool21 Jul 2026US 12,689,198 B1
- Monitoring and controlling connected pool devices24 Sep 2026US 2026/0286736 A1Pentair Water Pool and Spa, Inc.
- Adaptive pool control system and method of use20 Aug 2026US 2026/0244166 A1
- Heat Pump Pool Water Heater Systems and Methods Thereto13 Aug 2026US 2026/0234952 A1Rheem Manufacturing Company
- Sustainable heat transfer system that includes a digital processing facility and a recreational man-made swimming lagoon that provides cooling to such facility, the system being configured for contributing to environmental sustainability and community benefits9 Jul 2026US 2026/0193896 A1
- Sustainable heat transfer system that includes a digital processing facility and a recreational man-made swimming lagoon that provides cooling to such facility, the system being configured for contributing to environmental sustainability and community benefits14 May 2026US 2026/0132646 A1
Most cited
By later US patents
- Controller and control method for a pool system120US 4,322,297 A1982
- Speed control90US 8,043,070 B2Danfoss Low Power Drives, a Division of Danfoss · 2011
- Pumping system with two way communication87US 7,854,597 B2Danfoss Low Power Drives · 2010
- Speed control67US 8,465,262 B2Pentair Water Pool and Spa, Inc. · 2013
- Auto switching swimming pool/spa heater system49US 5,415,221 A1995