F25B 2313/025
Compression machines, plants or systems with reversible cycle not otherwise provided for
Official title: using multiple outdoor units
F25B2313/025 (Compression machines, plants or systems with reversible cycle not otherwise provided for) appears on 427 US grants and 446 published applications in this corpus.
Search patents in F25B- Granted patents
- 427
- Published applications
- 446
- Assignees
- 109
- Inventors
- 904
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 11 | 0 |
| 1998 | 12 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 0 |
| 2002 | 6 | 4 |
| 2003 | 3 | 8 |
| 2004 | 5 | 9 |
| 2005 | 4 | 14 |
| 2006 | 3 | 21 |
| 2007 | 12 | 4 |
| 2008 | 5 | 8 |
| 2009 | 5 | 11 |
| 2010 | 6 | 11 |
| 2011 | 5 | 7 |
| 2012 | 3 | 10 |
| 2013 | 5 | 16 |
| 2014 | 3 | 15 |
| 2015 | 12 | 25 |
| 2016 | 12 | 37 |
| 2017 | 24 | 24 |
| 2018 | 31 | 18 |
| 2019 | 34 | 26 |
| 2020 | 20 | 35 |
| 2021 | 20 | 38 |
| 2022 | 30 | 38 |
| 2023 | 20 | 22 |
| 2024 | 29 | 26 |
| 2025 | 20 | 10 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heating, ventilation, and air-conditioning system with reheat28 Jul 2026US 12,693,050 B2Goodman Global Group, Inc.
- Rotary compressor and refrigeration cycle device2 Jun 2026US 12,644,631 B2Carrier Japan Corporation
- Electric component unit, and heat source unit for refrigeration cycle apparatus19 May 2026US 12,631,373 B2Daikin Industries, Ltd.
- Air conditioner17 Mar 2026US 12,578,116 B2LG Electronics Inc.
- Control scheme for automatic fan mode for use with variable refrigerant flow systems24 Feb 2026US 12,560,369 B2Lennox Industries Inc.
- Heat pump and method for operating a heat pump23 Jul 2026US 2026/0210605 A1Viessmann Holding International GmbH
- Air conditioner16 Jul 2026US 2026/0202107 A1Fujitsu General Limited
- Control scheme for automatic fan mode for use with variable refrigerant flow systems18 Jun 2026US 2026/0168717 A1Lennox Industries Inc.
- Refrigeration apparatus30 Apr 2026US 2026/0118017 A1Daikin Industries, Ltd.
- Heat source unit and refrigeration apparatus30 Apr 2026US 2026/0118040 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Compressor with liquid injection131US 5,076,067 ACopeland Corporation · 1991
- Geothermal heat pump system116US 5,758,514 AEnvirotherm Heating & Cooling Systems, Inc. · 1998
- Heat pump including auxiliary outdoor heat exchanger acting as defroster and sub-cooler88US 4,171,622 AMatsushita Electric Industrial Co., Ltd. · 1979
- Heat pump having an accumulator with refrigerant level sensor80US 5,136,855 AOntario Hydro · 1992
- Automotive air conditioner having condenser and evaporator provided within air duct69US 5,299,431 ANippondenso Co., Ltd. · 1994