F24H 9/2035
Using fluid fuel
Official title: {using fluid fuel}
F24H9/2035 (Using fluid fuel) appears on 450 US grants and 505 published applications in this corpus.
Search patents in F24H- Granted patents
- 450
- Published applications
- 505
- Assignees
- 158
- Inventors
- 824
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 7 | 3 |
| 2002 | 7 | 6 |
| 2003 | 7 | 9 |
| 2004 | 8 | 9 |
| 2005 | 12 | 8 |
| 2006 | 2 | 4 |
| 2007 | 3 | 8 |
| 2008 | 5 | 8 |
| 2009 | 5 | 13 |
| 2010 | 6 | 29 |
| 2011 | 7 | 10 |
| 2012 | 17 | 24 |
| 2013 | 11 | 28 |
| 2014 | 13 | 25 |
| 2015 | 20 | 35 |
| 2016 | 19 | 22 |
| 2017 | 22 | 23 |
| 2018 | 27 | 34 |
| 2019 | 29 | 26 |
| 2020 | 24 | 34 |
| 2021 | 22 | 39 |
| 2022 | 40 | 26 |
| 2023 | 25 | 14 |
| 2024 | 15 | 28 |
| 2025 | 11 | 28 |
| 2026 | 11 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water heater having highly efficient and compact heat exchanger6 Oct 2026US RE51,053 E1A. O. Smith Corporation
- Fluid heating system with combustion trim learning14 Jul 2026US 12,680,727 B2A. O. Smith Corporation
- Boiler and method for stage change control thereof26 May 2026US 12,638,192 B2Kyungdong Navien Co., Ltd.
- 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
- Systems and Methods to Configure Water Heaters20 Aug 2026US 2026/0243467 A1Rheem Manufacturing Company
- Water heater appliance freeze prevention in recreational vehicles9 Jul 2026US 2026/0194260 A1Haier US Appliance Solutions, Inc.
- Gas water heating device and control method thereof18 Jun 2026US 2026/0168702 A1A. O. Smith Corporation
- Tankless drop-in replacement boiler11 Jun 2026US 2026/0160445 A1MO’S Mechanical, LLC
- Water Heater Gas Valve Shank Assembly And Method Of Manufacture7 May 2026US 2026/0126212 A1
Most cited
By later US patents
- Integrated appliance control system186US 6,059,195 ATridelta Industries, Inc. · 2000
- Control system for a water heater150US 5,797,358 AAOS Holding Company · 1998
- Oil-fired frac water heater92US 8,534,235 B22013
- Electronic temperature controller for water heaters89US 5,442,157 AWater Heater Innovations, Inc. · 1995
- Gas appliance detection apparatus65US 5,280,802 A1994