F24F 11/48
Prior to normal operation
Official title: prior to normal operation, e.g. pre-heating or pre-cooling
F24F11/48 (Prior to normal operation) appears on 99 US grants and 133 published applications in this corpus.
Search patents in F24F- Granted patents
- 99
- Published applications
- 133
- Assignees
- 57
- Inventors
- 339
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 16 |
| 2016 | 3 | 8 |
| 2017 | 6 | 6 |
| 2018 | 7 | 7 |
| 2019 | 5 | 7 |
| 2020 | 14 | 13 |
| 2021 | 5 | 14 |
| 2022 | 11 | 18 |
| 2023 | 11 | 12 |
| 2024 | 14 | 15 |
| 2025 | 6 | 9 |
| 2026 | 11 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Electrical relay switch for a blower of a climate control system4 Aug 2026US 12,698,920 B2Trane International Inc.
- Control method for air conditioner and air conditioner by controlling a compressor at different frequency rates based on a corner frequency16 Jun 2026US 12,656,015 B2Foshan Shunde Midea Electric Science and Technology Co., Ltd.
- System and method for controlling ventilation air of a target space2 Jun 2026US 12,644,618 B2Lennox Industries Inc.
- Configurable test platform2 Jun 2026US 12,644,822 B2PassiveLogic, Inc.
- Configurable Test Platform20 Aug 2026US 2026/0243656 A1PassiveLogic, Inc.
- System and Method for Controlling Ventilation Air of a Target Space9 Jul 2026US 2026/0194250 A1Lennox Industries Inc.
- Air conditioning control system, air conditioning control method, and recording medium11 Jun 2026US 2026/0160439 A1Panasonic Intellectual Property Management Co., Ltd.
- Humidifier and method for controlling the same14 May 2026US 2026/0132953 A1Samsung Electronics Co., Ltd.
- Control method and apparatus for air conditioning device, device, medium, and program product1 Jan 2026US 2026/0002690 A1Foshan Shunde Midea Electric Science and Technology Co., Ltd.
Most cited
By later US patents
- Intelligent controller for an environmental control system77US 8,554,376 B1Nest Labs, Inc. · 2013
- Temperature control of unoccupied living spaces74US 4,215,408 AUnited Technologies Corporation · 1980
- Adaptive optimum start33US 4,706,882 AHoneywell Inc. · 1987
- Methods and apparatus for using smart environment devices via application program interfaces33US 9,491,571 B2Google Inc. · 2016
- Methods and apparatus for using smart environment devices via application program interfaces27US 10,075,828 B2Google Inc. · 2018