F25B 2600/025
By controlling speed
Official title: by controlling speed
F25B2600/025 (By controlling speed) appears on 1,556 US grants and 1,902 published applications in this corpus.
Search patents in F25B- Granted patents
- 1,556
- Published applications
- 1,902
- Assignees
- 474
- Inventors
- 3,454
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 10 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 13 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 11 | 0 |
| 1997 | 2 | 0 |
| 1998 | 12 | 0 |
| 1999 | 11 | 0 |
| 2000 | 14 | 0 |
| 2001 | 13 | 4 |
| 2002 | 22 | 19 |
| 2003 | 26 | 31 |
| 2004 | 44 | 55 |
| 2005 | 33 | 51 |
| 2006 | 18 | 48 |
| 2007 | 20 | 44 |
| 2008 | 14 | 41 |
| 2009 | 21 | 39 |
| 2010 | 29 | 64 |
| 2011 | 29 | 42 |
| 2012 | 22 | 44 |
| 2013 | 32 | 48 |
| 2014 | 30 | 66 |
| 2015 | 36 | 102 |
| 2016 | 41 | 69 |
| 2017 | 79 | 109 |
| 2018 | 92 | 110 |
| 2019 | 96 | 139 |
| 2020 | 126 | 123 |
| 2021 | 113 | 125 |
| 2022 | 100 | 132 |
| 2023 | 110 | 124 |
| 2024 | 116 | 109 |
| 2025 | 80 | 90 |
| 2026 | 46 | 74 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Refrigeration cycle device6 Oct 2026US 12,752,599 B2Denso Corporation
- Preventing nuisance trips of ground-fault circuit interruptors electrically coupled to climate control systems29 Sep 2026US 12,749,641 B2Trane International Inc.
- Refrigeration and heat pump systems with pressure exchangers1 Sep 2026US 12,723,782 B2Energy Recovery, Inc.
- CO2 refrigeration system with convertible compressors25 Aug 2026US 12,716,621 B2Hill Phoenix, Inc.
- Refrigerant leak mitigation system25 Aug 2026US 12,716,632 B2Trane International Inc.
- System and method for heating and cooling24 Sep 2026US 2026/0287196 A1Daikin Industries, Ltd.
- Systems and methods for controlling refrigerant concentration17 Sep 2026US 2026/0276278 A1Copeland Corporation
- Systems and methods for controlling refrigerant concentration17 Sep 2026US 2026/0276279 A1Copeland Corporation
- Air conditioner for vehicle10 Sep 2026US 2026/0264474 A1Sanden Corporation
- Dishwasher and method for controlling the same27 Aug 2026US 2026/0248347 A1LG Electronics Inc.
Most cited
By later US patents
- Control for commercial refrigeration system204US 5,586,444 ATyler Refrigeration Corporation · 1996
- Variable speed drive chiller system167US 6,434,960 B1Carrier Corporation · 2002
- Electronic thermostat employing adaptive cycling161US 4,725,001 A1988
- Method for operating variable speed heat pumps and air conditioners156US 4,873,649 AHoneywell Inc. · 1989
- Heating and cooling system with variable capacity compressor154US 5,628,201 ACopeland Corporation · 1997