F24F 11/42
Of outdoor units
Official title: of outdoor units
F24F11/42 (Of outdoor units) appears on 183 US grants and 219 published applications in this corpus.
Search patents in F24F- Granted patents
- 183
- Published applications
- 219
- Assignees
- 62
- Inventors
- 560
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 2 | 1 |
| 2008 | 0 | 5 |
| 2009 | 0 | 0 |
| 2010 | 4 | 5 |
| 2011 | 0 | 7 |
| 2012 | 0 | 5 |
| 2013 | 6 | 4 |
| 2014 | 3 | 14 |
| 2015 | 1 | 12 |
| 2016 | 7 | 16 |
| 2017 | 12 | 13 |
| 2018 | 16 | 13 |
| 2019 | 21 | 9 |
| 2020 | 13 | 18 |
| 2021 | 11 | 17 |
| 2022 | 15 | 20 |
| 2023 | 9 | 16 |
| 2024 | 19 | 15 |
| 2025 | 13 | 9 |
| 2026 | 6 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Operation control system, operation control apparatus, and operation control method25 Aug 2026US 12,716,601 B2Daikin Industries, Ltd.
- Heat exchanger support device25 Aug 2026US 12,716,613 B2Mitsubishi Electric Corporation
- System and method for removing condensation from air conditioning units14 Jul 2026US 12,680,710 B2Rheem Manufacturing Company
- Air conditioner water treatment and overflow prevention system24 Mar 2026US 12,584,652 B1
- Enhanced heat pump defrost without use of auxiliary heat20 Jan 2026US 12,529,489 B2Rheem Manufacturing Company
- Air conditioning appliances defrost8 Oct 2026US 2026/0309351 A1Haier US Appliance Solutions, Inc.
- Defrost control and management for heat pump applications17 Sep 2026US 2026/0276231 A1Daikin Comfort Technologies Manufacturing, L.P.
- Multi-circuit heat pump systems with improved defrost and hot gas reheat modes20 Aug 2026US 2026/0243456 A1Daikin Comfort Technologies Manufacturing, L.P.
- System and method for defrosting outdoor coils in reversible rooftop units13 Aug 2026US 2026/0235310 A1Lennox Industries Inc.
- Outdoor unit of air-conditioning apparatus16 Jul 2026US 2026/0202109 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Heat pump motor optimization and sensor fault detection164US 5,630,325 ACopeland Corporation · 1997
- Heat pump motor optimization and sensor fault detection156US 5,440,895 ACopeland Corporation · 1995
- Interactive control system for an HVAC system137US 7,296,426 B2Emerson Electric Co. · 2007
- Interactive control system for an HVAC system93US 7,784,291 B2Emerson Electric Co. · 2010
- Residential heating, cooling and energy management system89US 4,645,908 AUHR Corporation · 1987