F25B 2600/2509
Economiser valves
F25B2600/2509 (Economiser valves) appears on 321 US grants and 391 published applications in this corpus.
Search patents in F25B- Granted patents
- 321
- Published applications
- 391
- Assignees
- 105
- Inventors
- 706
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 5 | 2 |
| 2003 | 3 | 3 |
| 2004 | 5 | 4 |
| 2005 | 5 | 11 |
| 2006 | 2 | 5 |
| 2007 | 2 | 4 |
| 2008 | 7 | 19 |
| 2009 | 1 | 10 |
| 2010 | 5 | 20 |
| 2011 | 7 | 15 |
| 2012 | 9 | 12 |
| 2013 | 9 | 10 |
| 2014 | 5 | 15 |
| 2015 | 4 | 29 |
| 2016 | 10 | 16 |
| 2017 | 21 | 15 |
| 2018 | 32 | 24 |
| 2019 | 22 | 27 |
| 2020 | 26 | 24 |
| 2021 | 20 | 32 |
| 2022 | 27 | 26 |
| 2023 | 14 | 22 |
| 2024 | 23 | 20 |
| 2025 | 23 | 18 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Refrigeration system and the control method thereof11 Aug 2026US 12,704,301 B2Carrier Corporation
- Air conditioner and control method thereof28 Apr 2026US 12,613,059 B2Samsung Electronics Co., Ltd.
- Refrigerant system and controlling method thereof for equalizing pressure difference between oil separator and evaporator14 Apr 2026US 12,601,530 B2Fu Sheng Industrial Co., Ltd.
- Economizer port valve7 Apr 2026US 12,595,943 B2Tyco Fire & Security GmbH
- Test chamber and method for its control having cooling circuit accommodating small volume test chamber31 Mar 2026US 12,590,719 B2Weiss Technik GmbH
- Two-stage compression centrifugal unit and middle air supplementing control method therefor, and heating and ventilation device20 Aug 2026US 2026/0243470 A1Chongqing Midea General Refrigeration Equipment Co., Ltd.
- Hvacr system with flash tank having dynamic receiver functions20 Aug 2026US 2026/0243482 A1Trane Air Conditioning Systems (China) Co., Ltd.
- Temperature regulation device for semiconductor manufacturing device13 Aug 2026US 2026/0235340 A1SMC Corporation
- Batch oil return system and method6 Aug 2026US 2026/0227103 A1John Bean Technologies Corporation
- Air conditioner23 Jul 2026US 2026/0210611 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Economizer control with variable capacity193US 5,095,712 ACarrier Corporation · 1992
- Compressor pulse width modulation172US 6,213,731 B1Copeland Corporation · 2001
- Method and apparatus for the control of economizer circuit flow for optimum performance95US 6,474,087 B1Carrier Corporation · 2002
- Refrigerant cycle with operating range extension95US 6,925,823 B2Carrier Corporation · 2005
- Motor cooling in a refrigeration system75US 6,032,472 ACarrier Corporation · 2000