E04H 4/1245
Recirculating pumps for swimming pool water
Official title: {Recirculating pumps for swimming pool water}
E04H4/1245 (Recirculating pumps for swimming pool water) appears on 157 US grants and 214 published applications in this corpus.
Search patents in E04H- Granted patents
- 157
- Published applications
- 214
- Assignees
- 78
- Inventors
- 300
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 3 |
| 2007 | 1 | 4 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 3 | 3 |
| 2011 | 2 | 3 |
| 2012 | 2 | 5 |
| 2013 | 6 | 6 |
| 2014 | 1 | 10 |
| 2015 | 6 | 12 |
| 2016 | 4 | 8 |
| 2017 | 9 | 29 |
| 2018 | 11 | 13 |
| 2019 | 20 | 15 |
| 2020 | 17 | 13 |
| 2021 | 20 | 13 |
| 2022 | 9 | 20 |
| 2023 | 9 | 19 |
| 2024 | 8 | 15 |
| 2025 | 14 | 7 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Skimmer to main drain diverter valve15 Sep 2026US 12,736,143 B1Aquastar Pool Products, Inc.
- System and method to monitor and control pool equipment4 Aug 2026US 12,698,638 B2SmartPoolSaver Inc.
- Variable speed pumping system and method16 Jun 2026US 12,655,848 B2Pentair Water Pool and Spa, Inc.
- Variable speed pumping system and method19 May 2026US 12,631,187 B2Pentair Water Pool and Spa, Inc.
- Overflow system for recreational pools21 Apr 2026US 12,607,027 B2Com Pac Filtration, Inc.
- Variable speed pumping system and method8 Oct 2026US 2026/0309157 A1Pentair Water Pool and Spa, Inc.
- Variable speed pumping system and method1 Oct 2026US 2026/0298251 A1Pentair Water Pool and Spa, Inc.
- Inflatable Above-Ground Swimming Pool With Drop-Stitch Sidewall3 Sep 2026US 2026/0258666 A1
- System for visual light communication and related methods27 Aug 2026US 2026/0250975 A1Elliptic Works LLC
- Pool Cleaning Robot with Bypass Filtration Flow System20 Aug 2026US 2026/0243100 A1Bettabot Inc.
Most cited
By later US patents
- Microprocessor based pump controller for backwashable filter113US 4,676,914 ANorth Coast Systems, Inc. · 1987
- Variable speed pumping system and method105US 7,874,808 B2Pentair Water Pool and Spa, Inc. · 2011
- Liquid pump control104US 4,505,643 ANorth Coast Systems, Inc. · 1985
- Swimming pool filtering system90US 4,421,643 AInternational Telephone and Telegraph Corporation · 1983
- Speed control90US 8,043,070 B2Danfoss Low Power Drives, a Division of Danfoss · 2011