F25B 2500/15
Hunting, i.e. oscillation of controlled refrigeration variables reaching undesirable values
F25B2500/15 (Hunting, i.e. oscillation of controlled refrigeration variables reaching undesirable values) appears on 42 US grants and 24 published applications in this corpus.
Search patents in F25B- Granted patents
- 42
- Published applications
- 24
- Assignees
- 28
- Inventors
- 105
- Latest grant
- 8 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 2 | 4 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 3 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 4 |
| 2024 | 1 | 0 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Control device for refrigeration cycle89US 4,499,739 AMitsubishi Denki Kabushiki Kaisha · 1985
- Refrigerant flow rate control based on liquid level in dual evaporator two-stage refrigeration cycles89US 5,431,026 AGeneral Electric Company · 1995
- Pulse controlled solenoid valve with low ambient start-up means70US 4,686,835 A1987
- Refrigeration system having periodic flush cycles68US 4,697,431 A1987
- Adaptive refrigerant control algorithm66US 4,848,099 AHoneywell Inc. · 1989