F24H 15/35
Control of the speed of fans
F24H15/35 (Control of the speed of fans) appears on 177 US grants and 205 published applications in this corpus.
Search patents in F24H- Granted patents
- 177
- Published applications
- 205
- Assignees
- 92
- Inventors
- 420
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 3 | 4 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 7 |
| 2010 | 0 | 7 |
| 2011 | 3 | 7 |
| 2012 | 6 | 6 |
| 2013 | 5 | 10 |
| 2014 | 7 | 11 |
| 2015 | 7 | 12 |
| 2016 | 8 | 10 |
| 2017 | 10 | 13 |
| 2018 | 16 | 15 |
| 2019 | 13 | 16 |
| 2020 | 11 | 18 |
| 2021 | 14 | 10 |
| 2022 | 10 | 16 |
| 2023 | 13 | 6 |
| 2024 | 10 | 14 |
| 2025 | 5 | 10 |
| 2026 | 8 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- 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.
- Boiler and method for stage change control thereof26 May 2026US 12,638,192 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
- Systems and Methods to Adjust and/or Upgrade Configurations of Water Heaters16 Jul 2026US 2026/0202099 A1Rheem Manufacturing Company
- Hybrid heating system with humidity control4 Jun 2026US 2026/0153253 A1Midea Group Co., Ltd.
Most cited
By later US patents
- Integrated appliance control system186US 6,059,195 ATridelta Industries, Inc. · 2000
- Automatic control of air delivery in forced air furnaces54US 6,000,622 AIntegrated Control Devices, Inc. · 1999
- Combination water heating and space heating apparatus52US 5,544,645 ALennox Industries Inc. · 1996
- Fan control arrangement for a two stage furnace49US 5,027,789 AInter-City Products Corporation (USA) · 1991
- Variable speed inducer motor control method49US 5,331,944 ACarrier Corporation · 1994