F24F 2221/34
Heater
Official title: Heater, e.g. gas burner, electric air heater
F24F2221/34 (Heater) appears on 177 US grants and 269 published applications in this corpus.
Search patents in F24F- Granted patents
- 177
- Published applications
- 269
- Assignees
- 132
- Inventors
- 568
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 1 | 6 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 6 |
| 2010 | 2 | 4 |
| 2011 | 0 | 11 |
| 2012 | 1 | 5 |
| 2013 | 2 | 6 |
| 2014 | 4 | 10 |
| 2015 | 11 | 12 |
| 2016 | 6 | 11 |
| 2017 | 14 | 19 |
| 2018 | 13 | 14 |
| 2019 | 14 | 17 |
| 2020 | 17 | 15 |
| 2021 | 11 | 29 |
| 2022 | 11 | 20 |
| 2023 | 17 | 20 |
| 2024 | 17 | 22 |
| 2025 | 18 | 17 |
| 2026 | 5 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of operating an HVAC system16 Jun 2026US 12,656,014 B2Belimo Holding AG
- Air quality enhancement system based on fluid mechanics and integrated UV emission5 May 2026US 12,618,574 B2Associacao Blc3—Campus De Tecnologia E Inovacao
- Smart vent system for localized air quality control10 Mar 2026US 12,571,558 B2Tyco Fire & Security GmbH
- Heat exchanger arrangement for HVAC system10 Feb 2026US 12,546,506 B2Johnson Controls Light Commercial IP GmbH
- Heating and humidifying device and heating and humidifying method thereof6 Jan 2026US 12,515,007 B2
- Thermal management system with hybrid circuit for energy storage device in air conditioning system1 Oct 2026US 2026/0298487 A1Carrier Corporation
- Lavatory mirror de-fogging fan6 Aug 2026US 2026/0226726 A1
- Heating system for hvac system6 Aug 2026US 2026/0227091 A1Tyco Fire & Security GmbH
- A desiccant dehumidifier and a method, performed by a control device, for controlling a desiccant dehumidifier30 Jul 2026US 2026/0218921 A1Munters Europe Aktiebolag
- Outdoor unit of air-conditioning apparatus16 Jul 2026US 2026/0202109 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Integration of LED lighting with building controls120US 8,214,084 B2iLumisys, Inc. · 2012
- Refrigeration heat pump and auxiliary heating apparatus control system with switchover during low outdoor temperature79US 4,598,764 AHoneywell Inc. · 1986
- Method and apparatus to prevent low temperature damage using an HVAC control67US 7,085,626 B2York International Corporation · 2006
- Integration of LED lighting with building controls66US 8,571,716 B2iLumisys, Inc. · 2013
- Bath fan and heater with cover having adjustable luver or depressible fastener and depressible release66US 9,103,104 B1Chien Luen Industries Co., Ltd., Inc. · 2015