F25B 2400/13
Economisers
F25B2400/13 (Economisers) appears on 1,336 US grants and 1,547 published applications in this corpus.
Search patents in F25B- Granted patents
- 1,336
- Published applications
- 1,547
- Assignees
- 318
- Inventors
- 2,278
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 12 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 12 | 0 |
| 1991 | 8 | 0 |
| 1992 | 16 | 0 |
| 1993 | 10 | 0 |
| 1994 | 1 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 11 | 0 |
| 1998 | 18 | 0 |
| 1999 | 7 | 0 |
| 2000 | 17 | 0 |
| 2001 | 16 | 3 |
| 2002 | 21 | 13 |
| 2003 | 19 | 10 |
| 2004 | 14 | 17 |
| 2005 | 22 | 46 |
| 2006 | 22 | 50 |
| 2007 | 22 | 30 |
| 2008 | 18 | 52 |
| 2009 | 13 | 50 |
| 2010 | 30 | 84 |
| 2011 | 26 | 59 |
| 2012 | 25 | 44 |
| 2013 | 33 | 49 |
| 2014 | 31 | 48 |
| 2015 | 36 | 91 |
| 2016 | 40 | 60 |
| 2017 | 74 | 71 |
| 2018 | 72 | 83 |
| 2019 | 94 | 66 |
| 2020 | 74 | 101 |
| 2021 | 58 | 77 |
| 2022 | 90 | 118 |
| 2023 | 68 | 111 |
| 2024 | 98 | 88 |
| 2025 | 92 | 68 |
| 2026 | 42 | 58 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Economizer and refrigeration system comprising same6 Oct 2026US 12,753,959 B2Tyco Fire & Security GmbH
- Vapor-liquid separator and systems including same29 Sep 2026US 12,747,897 B2Copeland Corporation
- CO2 refrigeration system with convertible compressors25 Aug 2026US 12,716,621 B2Hill Phoenix, Inc.
- Refrigeration circuit with thermal storage25 Aug 2026US 12,716,633 B2Carrier Corporation
- Variable refrigerant flow system and control method18 Aug 2026US 12,710,207 B2Guangdong Carrier Hvac Co., Ltd.
- Heat pump module, plant comprising such heat pump module and method for heating a substance8 Oct 2026US 2026/0309379 A1Snf Group
- Liquid level control of expansion valves in climate control systems24 Sep 2026US 2026/0287231 A1Trane International Inc.
- Screw compressor, refrigeration system17 Sep 2026US 2026/0275988 A1Carrier Corporation
- Heat Pump Systems and Methods17 Sep 2026US 2026/0276247 A1AtmosZero, Inc.
- Injection and capacity control in an hvacr system10 Sep 2026US 2026/0266518 A1Trane Air Conditioning Systems (China) Co., 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
- Variable speed drive chiller system167US 6,434,960 B1Carrier Corporation · 2002
- Temperature control system and method for efficiently obtaining and maintaining the temperature in a conditioned space140US 6,095,427 AThermo King Corporation · 2000
- Refrigeration-cycle device123US 6,347,528 B1Denso Corporation · 2002