F24H 15/37
Of electric heaters
Official title: of electric heaters
F24H15/37 (Of electric heaters) appears on 610 US grants and 743 published applications in this corpus.
Search patents in F24H- Granted patents
- 610
- Published applications
- 743
- Assignees
- 374
- Inventors
- 1,402
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 1 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 10 | 0 |
| 2001 | 16 | 3 |
| 2002 | 6 | 6 |
| 2003 | 14 | 11 |
| 2004 | 9 | 9 |
| 2005 | 6 | 14 |
| 2006 | 16 | 23 |
| 2007 | 11 | 23 |
| 2008 | 5 | 13 |
| 2009 | 13 | 23 |
| 2010 | 8 | 32 |
| 2011 | 9 | 21 |
| 2012 | 22 | 30 |
| 2013 | 19 | 33 |
| 2014 | 18 | 36 |
| 2015 | 19 | 45 |
| 2016 | 37 | 38 |
| 2017 | 24 | 28 |
| 2018 | 18 | 41 |
| 2019 | 38 | 53 |
| 2020 | 31 | 50 |
| 2021 | 29 | 46 |
| 2022 | 33 | 25 |
| 2023 | 27 | 25 |
| 2024 | 36 | 45 |
| 2025 | 17 | 41 |
| 2026 | 13 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric fluid heater22 Sep 2026US 12,742,569 B2Digital Heat Ltd.
- Heater bundles having variable power output within zones22 Sep 2026US 12,742,570 B2Watlao Electric Manufacturing Company
- Hot water tank and flow through heating assembly23 Jun 2026US 12,663,181 B2National Machine Company
- Safety control system for electric water heater2 Jun 2026US 12,644,626 B2National Kaohsiung University of Science and Technology
- Electric boiler device based on utilization of residual energy of elevator, and control method19 May 2026US 12,631,346 B2Zhejiang University of Technology
- Water heating system and device8 Oct 2026US 2026/0309340 A1Mixergy Limited
- System and method for cleaning windows and lenses in automotive applications1 Oct 2026US 2026/0296374 A1Uusi, LLC
- Boost Heat Pump Water Heater3 Sep 2026US 2026/0258970 A1Rheem Manufacturing Company
- Water heater and methods for operating the same3 Sep 2026US 2026/0258978 A1Bradford White Corporation
- Water heater and methods for operating the same3 Sep 2026US 2026/0258979 A1Bradford White Corporation
Most cited
By later US patents
- Fluid heating control system199US 6,246,831 B1David Seitz · 2001
- Microprocessor controlled tankless water heater system129US 5,504,306 AChronomite Laboratories, Inc. · 1996
- Fluid heater with improved heating elements controller107US 6,080,971 A2000
- Domestic electric energy control104US 5,956,462 AAquabeat Pty Ltd. · 1999
- Hot water controller98US 5,968,393 A1999