F24F 11/87
By controlling absorption or discharge of heat in outdoor units
Official title: by controlling absorption or discharge of heat in outdoor units
F24F11/87 (By controlling absorption or discharge of heat in outdoor units) appears on 172 US grants and 156 published applications in this corpus.
Search patents in F24F- Granted patents
- 172
- Published applications
- 156
- Assignees
- 71
- Inventors
- 413
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 3 |
| 2007 | 1 | 3 |
| 2008 | 2 | 6 |
| 2009 | 2 | 8 |
| 2010 | 3 | 2 |
| 2011 | 3 | 4 |
| 2012 | 4 | 9 |
| 2013 | 2 | 6 |
| 2014 | 2 | 5 |
| 2015 | 5 | 10 |
| 2016 | 6 | 11 |
| 2017 | 9 | 21 |
| 2018 | 15 | 7 |
| 2019 | 10 | 7 |
| 2020 | 6 | 13 |
| 2021 | 7 | 8 |
| 2022 | 9 | 6 |
| 2023 | 9 | 10 |
| 2024 | 8 | 7 |
| 2025 | 8 | 5 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air conditioner30 Jun 2026US 12,669,257 B2Fujitsu General Limited
- Air conditioner23 Jun 2026US 12,663,175 B2Fujitsu General Limited
- Temperature and relative humidity controller9 Dec 2025US 12,492,839 B2Nelumbo Inc.
- Air conditioner12 Aug 2025US 12,385,662 B2Mitsubishi Electric Corporation
- Methods for sabbath mode in air conditioning units22 Jul 2025US 12,366,376 B2Haier US Appliance Solutions, Inc.
- Air conditioner9 Jul 2026US 2026/0194275 A1LG Electronics Inc.
- System and method for vibration control in array systems18 Jun 2026US 2026/0168686 A1Trane International Inc.
- Control system for an hvac system4 Jun 2026US 2026/0153260 A1Tyco Fire & Security GmbH
- Air conditioning device12 Feb 2026US 2026/0043572 A1Fujitsu General Limited
- Heat transfer system21 Aug 2025US 2025/0264244 A1Omachron Intellectual Property Inc.
Most cited
By later US patents
- Control system and methods for a multiparameter electronically commutated motor250US 5,592,058 AGeneral Electric Company · 1997
- Air conditioning method in machine room having forced air-cooling equipment housed therein247US 5,718,628 ANippon Telegraph and Telephone Corporation · 1998
- Auto changeover thermostat with means for handling temperature entry errors150US 4,446,913 AThe Trane Company · 1984
- Humidity control for variable speed air conditioner140US 5,062,276 AElectric Power Research Institute, Inc. · 1991
- Interactive control system for an HVAC system137US 7,296,426 B2Emerson Electric Co. · 2007