F25B 41/26
Of fluid flow reversing valves
Official title: of fluid flow reversing valves
F25B41/26 (Of fluid flow reversing valves) appears on 217 US grants and 219 published applications in this corpus.
Search patents in F25B- Granted patents
- 217
- Published applications
- 219
- Assignees
- 114
- Inventors
- 566
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 4 |
| 2004 | 5 | 5 |
| 2005 | 2 | 0 |
| 2006 | 5 | 6 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 2 | 5 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 2 | 4 |
| 2015 | 0 | 2 |
| 2016 | 2 | 3 |
| 2017 | 3 | 5 |
| 2018 | 4 | 7 |
| 2019 | 3 | 9 |
| 2020 | 9 | 6 |
| 2021 | 6 | 14 |
| 2022 | 9 | 35 |
| 2023 | 12 | 33 |
| 2024 | 28 | 36 |
| 2025 | 27 | 21 |
| 2026 | 16 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat source unit6 Oct 2026US 12,753,956 B2Daikin Industries, Ltd.
- Heat pump and control method thereof1 Sep 2026US 12,723,788 B2Kyungdong Navien Co., Ltd.
- Air conditioning system25 Aug 2026US 12,716,624 B2Daikin Industries, Ltd.
- Variable refrigerant flow system and control method18 Aug 2026US 12,710,207 B2Guangdong Carrier Hvac Co., Ltd.
- Modular encapsulated heat pumps11 Aug 2026US 12,704,279 B2
- Refrigerant distribution device, and an air-conditioning apparatus including refrigerant distribution device8 Oct 2026US 2026/0309382 A1Mitsubishi Electric Corporation
- Systems and methods for integrating a water heating unit and a heat pump1 Oct 2026US 2026/0298489 A1
- Temperature regulation device for semiconductor manufacturing device13 Aug 2026US 2026/0235340 A1SMC Corporation
- Sliding block structure and reversing valve6 Aug 2026US 2026/0226992 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Air conditioner16 Jul 2026US 2026/0202107 A1Fujitsu General Limited
Most cited
By later US patents
- Heat pump energy management system33US 6,082,125 A2000
- Four wave valve for reversible cycle refrigeration system31US 4,139,355 AEssex Group, Inc. · 1979
- Valve assembly and airconditioning system including same27US 6,491,063 B1Ben-Ro Industry and Development Ltd. · 2002
- Directional control valve for switching the mode of operation in a heat transfer system26US 5,690,144 ARanco Japan Ltd. · 1997
- Refrigeration cycle using six-way change-over valve23US 5,634,352 ASanyo Electric Co., Ltd. · 1997