F24H 15/345
Control of fans
Official title: Control of fans, e.g. on-off control (control of fans of heat pump units F24H15/375)
F24H15/345 (Control of fans) appears on 305 US grants and 341 published applications in this corpus.
Search patents in F24H- Granted patents
- 305
- Published applications
- 341
- Assignees
- 151
- Inventors
- 685
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 7 | 8 |
| 2004 | 4 | 2 |
| 2005 | 4 | 4 |
| 2006 | 2 | 1 |
| 2007 | 0 | 5 |
| 2008 | 0 | 7 |
| 2009 | 4 | 10 |
| 2010 | 3 | 14 |
| 2011 | 3 | 11 |
| 2012 | 9 | 13 |
| 2013 | 8 | 15 |
| 2014 | 12 | 12 |
| 2015 | 9 | 27 |
| 2016 | 13 | 15 |
| 2017 | 18 | 23 |
| 2018 | 22 | 26 |
| 2019 | 23 | 23 |
| 2020 | 21 | 30 |
| 2021 | 22 | 22 |
| 2022 | 18 | 18 |
| 2023 | 17 | 7 |
| 2024 | 16 | 22 |
| 2025 | 7 | 12 |
| 2026 | 10 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air heating apparatus and method for disassembling air heating apparatus1 Sep 2026US 12,723,777 B2Kyungdong Navien Co., Ltd.
- Fluid heating system with combustion trim learning14 Jul 2026US 12,680,727 B2A. O. Smith Corporation
- Furnace30 Jun 2026US 12,669,266 B2Fire Chief Industries LLC
- Method for producing a heating device, and heating device16 Jun 2026US 12,656,020 B2Truma Gerätetechnik GmbH & Co. KG
- Air heating apparatus9 Jun 2026US 12,650,243 B2Kyungdong Navien Co., Ltd.
- Exhaust Flue for Water Heater24 Sep 2026US 2026/0287210 A1Rheem Manufacturing Company
- Control device for controlling a burner apparatus configured to burn gaseous liquid or solid fuel17 Sep 2026US 2026/0276243 A1Bertelli & Partners S.R.L.
- Water heater and methods for operating the same3 Sep 2026US 2026/0258971 A1Bradford White Corporation
- 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
- Integrated appliance control system186US 6,059,195 ATridelta Industries, Inc. · 2000
- Control system for bathers94US 6,590,188 B2Balboa Instruments, Inc. · 2003
- Control system for bathers93US 6,282,370 B1Balboa Instruments, Inc. · 2001
- Refrigeration heat pump and auxiliary heating apparatus control system with switchover during low outdoor temperature79US 4,598,764 AHoneywell Inc. · 1986
- Power vent water heater with electronic control system60US 6,053,130 AAmerican Water Heater Company · 2000