F25B 41/20
Disposition of valves
Official title: Disposition of valves, e.g. of on-off valves or flow control valves (expansion valves F25B41/31)
F25B41/20 (Disposition of valves) appears on 2,604 US grants and 2,840 published applications in this corpus.
Search patents in F25B- Granted patents
- 2,604
- Published applications
- 2,840
- Assignees
- 789
- Inventors
- 5,118
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 6 | 0 |
| 1978 | 10 | 0 |
| 1979 | 9 | 0 |
| 1980 | 17 | 0 |
| 1981 | 14 | 0 |
| 1982 | 10 | 0 |
| 1983 | 4 | 0 |
| 1984 | 16 | 0 |
| 1985 | 14 | 0 |
| 1986 | 22 | 0 |
| 1987 | 23 | 0 |
| 1988 | 22 | 0 |
| 1989 | 24 | 0 |
| 1990 | 26 | 0 |
| 1991 | 21 | 0 |
| 1992 | 25 | 0 |
| 1993 | 25 | 0 |
| 1994 | 18 | 0 |
| 1995 | 8 | 0 |
| 1996 | 11 | 0 |
| 1997 | 19 | 0 |
| 1998 | 33 | 0 |
| 1999 | 41 | 0 |
| 2000 | 42 | 0 |
| 2001 | 60 | 14 |
| 2002 | 46 | 45 |
| 2003 | 48 | 45 |
| 2004 | 52 | 62 |
| 2005 | 43 | 63 |
| 2006 | 43 | 48 |
| 2007 | 34 | 33 |
| 2008 | 18 | 28 |
| 2009 | 14 | 30 |
| 2010 | 16 | 32 |
| 2011 | 17 | 30 |
| 2012 | 17 | 37 |
| 2013 | 12 | 53 |
| 2014 | 18 | 56 |
| 2015 | 29 | 95 |
| 2016 | 58 | 91 |
| 2017 | 77 | 127 |
| 2018 | 106 | 129 |
| 2019 | 126 | 165 |
| 2020 | 123 | 189 |
| 2021 | 130 | 236 |
| 2022 | 214 | 296 |
| 2023 | 194 | 250 |
| 2024 | 261 | 292 |
| 2025 | 227 | 231 |
| 2026 | 141 | 163 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vapor compression and absorption refrigeration cycle (VCARC)6 Oct 2026US 12,753,955 B2Effusio, LLC
- Heat source unit6 Oct 2026US 12,753,956 B2Daikin Industries, Ltd.
- Valve manifold for a pool environment control system29 Sep 2026US 12,747,602 B2PoolAire, Inc.
- Evaporator-condenser system without external heating and cooling29 Sep 2026US 12,747,896 B2Illuminated Extractors, Ltd.
- CO2 refrigeration system with superheat control22 Sep 2026US 12,742,574 B2Hill Phoenix, Inc.
- Multi-way switching valve device8 Oct 2026US 2026/0309242 A1Mikuni Corporation
- Air conditioning appliances defrost8 Oct 2026US 2026/0309351 A1Haier US Appliance Solutions, Inc.
- 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 2026/0298484 A1
- Systems and methods for integrating a water heating unit and a heat pump1 Oct 2026US 2026/0298485 A1
Most cited
By later US patents
- Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor194US 6,047,557 ACopeland Corporation · 2000
- Refrigeration system and method of operating the same137US 6,973,794 B2Hussmann Corporation · 2005
- Air conditioning system with variable condenser reheat for enhanced dehumidification125US 6,826,921 B1Lennox Industries Inc. · 2004
- Refrigeration-cycle device123US 6,347,528 B1Denso Corporation · 2002
- Valve and door assembly for semi-frozen food dispensing machine111US 6,553,779 B1Specialty Equipment Companies, Inc. · 2003