F25B 2700/00
Sensing or detecting of parameters
Official title: Sensing or detecting of parameters; Sensors therefor
F25B2700/00 (Sensing or detecting of parameters) appears on 4,406 US grants and 5,382 published applications in this corpus.
Search patents in F25B- Granted patents
- 4,406
- Published applications
- 5,382
- Assignees
- 1,177
- Inventors
- 7,923
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 9 | 0 |
| 1981 | 9 | 0 |
| 1982 | 9 | 0 |
| 1983 | 8 | 0 |
| 1984 | 9 | 0 |
| 1985 | 15 | 0 |
| 1986 | 14 | 0 |
| 1987 | 16 | 0 |
| 1988 | 11 | 0 |
| 1989 | 23 | 0 |
| 1990 | 13 | 0 |
| 1991 | 19 | 0 |
| 1992 | 18 | 0 |
| 1993 | 23 | 0 |
| 1994 | 14 | 0 |
| 1995 | 22 | 0 |
| 1996 | 19 | 0 |
| 1997 | 16 | 0 |
| 1998 | 31 | 0 |
| 1999 | 27 | 0 |
| 2000 | 39 | 0 |
| 2001 | 41 | 21 |
| 2002 | 74 | 68 |
| 2003 | 90 | 92 |
| 2004 | 95 | 139 |
| 2005 | 91 | 188 |
| 2006 | 88 | 152 |
| 2007 | 88 | 147 |
| 2008 | 70 | 138 |
| 2009 | 56 | 123 |
| 2010 | 87 | 167 |
| 2011 | 84 | 143 |
| 2012 | 76 | 131 |
| 2013 | 81 | 145 |
| 2014 | 67 | 179 |
| 2015 | 117 | 271 |
| 2016 | 141 | 230 |
| 2017 | 246 | 307 |
| 2018 | 262 | 295 |
| 2019 | 302 | 323 |
| 2020 | 302 | 313 |
| 2021 | 276 | 370 |
| 2022 | 285 | 332 |
| 2023 | 281 | 328 |
| 2024 | 303 | 313 |
| 2025 | 269 | 265 |
| 2026 | 139 | 202 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25B 2700/21TemperaturesIndexing code3,264
- F25B 2700/19PressuresIndexing code1,750
- F25B 2700/15PowerIndexing code497
- F25B 2700/04Refrigerant levelIndexing code328
- F25B 2700/02HumidityIndexing code272
- F25B 2700/17SpeedsIndexing code223
- F25B 2700/13Mass flow of refrigerantsIndexing code179
- F25B 2700/11Sensor to detect if defrost is necessaryIndexing code130
All 13 subgroupsShow fewer
- F25B 2700/03Oil levelIndexing code126
- F25B 2700/01Sensors determining characteristics of the burner for a generatorIndexing code6
- F25B 2700/06Piston positions of a compressorIndexing code6
- F25B 2700/05Load shedding of a compressorIndexing code5
- F25B 2700/08Vapour quality, i.e. the mass fraction of vapour in the liquid-vapour mixtureIndexing code3
Recent patents
- System and method for detection and correction of reverse flow in an ejector refrigeration circuit6 Oct 2026US 12,753,952 B2Carrier Corporation
- Autocascade system with superheat control6 Oct 2026US 12,753,960 B2Trane International Inc.
- Cooling circuit for a system for supplying and cooling a gas6 Oct 2026US 12,753,961 B2Gaztransport Et Technigaz
- Cold water tank assembly and manufacturing method thereof29 Sep 2026US 12,747,895 B2Coway Co., Ltd.
- Control method, apparatus, and device for compressor, storage medium, and refrigeration system22 Sep 2026US 12,742,578 B2Gd Midea Heating & Ventilating Equipment Co., Ltd.
- Utilizing air moisture sensor and compressor power sensor data within a laundry appliance to detect refrigerant leaks8 Oct 2026US 2026/0308832 A1Haier US Appliance Solutions, Inc.
- Systems and methods for controlling capacity of a compressor8 Oct 2026US 2026/0309355 A1Tyco Fire & Security GmbH
- Refrigeration Circuit Device and Heat Pump8 Oct 2026US 2026/0309356 A1Viessmann Holding International GmbH
- Device and method of measuring the water content in the refrigerant of a refrigeration cycle8 Oct 2026US 2026/0309665 A1Danfoss A/S
- Device and method of measuring the gas-to-liquid ratio of the refrigerant of a refrigeration cycle8 Oct 2026US 2026/0309667 A1Danfoss A/S
Most cited
By later US patents
- Model-based alarming208US 6,990,821 B2Emerson Retail Services, Inc. · 2006
- Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor194US 6,047,557 ACopeland Corporation · 2000
- Economizer control with variable capacity193US 5,095,712 ACarrier Corporation · 1992
- Monitoring refrigerant in a refrigeration system192US 7,752,853 B2Emerson Retail Services, Inc. · 2010
- Fan motor on/off control system for a refrigeration appliance176US 5,918,474 AWhirlpool Corporation · 1999