F24H 15/215
Before heating
Official title: before heating
F24H15/215 (Before heating) appears on 260 US grants and 379 published applications in this corpus.
Search patents in F24H- Granted patents
- 260
- Published applications
- 379
- Assignees
- 146
- Inventors
- 671
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 3 |
| 2003 | 3 | 2 |
| 2004 | 2 | 2 |
| 2005 | 2 | 5 |
| 2006 | 3 | 3 |
| 2007 | 3 | 2 |
| 2008 | 2 | 3 |
| 2009 | 2 | 4 |
| 2010 | 1 | 18 |
| 2011 | 4 | 14 |
| 2012 | 7 | 22 |
| 2013 | 10 | 14 |
| 2014 | 10 | 16 |
| 2015 | 18 | 18 |
| 2016 | 12 | 20 |
| 2017 | 13 | 14 |
| 2018 | 14 | 26 |
| 2019 | 22 | 22 |
| 2020 | 12 | 23 |
| 2021 | 20 | 31 |
| 2022 | 22 | 18 |
| 2023 | 23 | 11 |
| 2024 | 7 | 24 |
| 2025 | 12 | 40 |
| 2026 | 6 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Safety control system for electric water heater2 Jun 2026US 12,644,626 B2National Kaohsiung University of Science and Technology
- Water heater device with TRIAC and method of use19 May 2026US 12,631,370 B2
- Hot water supply apparatus28 Apr 2026US 12,613,055 B2Rinnai Corporation
- Air pressure detection device, combustor, gas water heater, method and apparatus for controlling gas water heater, and computer-readable storage medium7 Apr 2026US 12,595,933 B2Midea Group Co., Ltd.
- Linked hot water supply system31 Mar 2026US 12,590,710 B2Noritz Corporation
- Smart electric heater for bathing installations8 Oct 2026US 2026/0309370 A1Balboa Water Group, Inc.
- 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
- Virtual water usage sensor for tank water heater and method3 Sep 2026US 2026/0258974 A1
- Hot water supply heating device20 Aug 2026US 2026/0243468 A1Noritz Corporation
Most cited
By later US patents
- Integrated appliance control system186US 6,059,195 ATridelta Industries, Inc. · 2000
- Fluid heater with improved heating elements controller91US 5,866,880 A1999
- Microprocessor controlled through-flow electric water heater90US 4,638,147 A1987
- Control system for bathers with ground continuity and ground fault detection86US 6,253,121 B1Balboa Instruments, Inc. · 2001
- Microprocessor control for a heat pump water heater70US 6,212,894 B1WaterFurnace International, Inc. · 2001