F25B 9/00
Compression machines, plants or systems, in which the refrigerant is air or
Official title: Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
F25B9/00 (Compression machines, plants or systems, in which the refrigerant is air or) appears on 3,875 US grants and 3,727 published applications in this corpus.
Search patents in F25B- Granted patents
- 3,875
- Published applications
- 3,727
- Assignees
- 1,339
- Inventors
- 6,222
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 30 | 0 |
| 1978 | 21 | 0 |
| 1979 | 16 | 0 |
| 1980 | 26 | 0 |
| 1981 | 36 | 0 |
| 1982 | 29 | 0 |
| 1983 | 38 | 0 |
| 1984 | 45 | 0 |
| 1985 | 45 | 0 |
| 1986 | 34 | 0 |
| 1987 | 27 | 0 |
| 1988 | 36 | 0 |
| 1989 | 52 | 0 |
| 1990 | 33 | 0 |
| 1991 | 44 | 0 |
| 1992 | 45 | 0 |
| 1993 | 44 | 0 |
| 1994 | 59 | 0 |
| 1995 | 52 | 0 |
| 1996 | 64 | 0 |
| 1997 | 69 | 0 |
| 1998 | 68 | 0 |
| 1999 | 72 | 0 |
| 2000 | 83 | 0 |
| 2001 | 108 | 31 |
| 2002 | 136 | 81 |
| 2003 | 123 | 119 |
| 2004 | 87 | 159 |
| 2005 | 97 | 190 |
| 2006 | 117 | 150 |
| 2007 | 109 | 134 |
| 2008 | 66 | 125 |
| 2009 | 56 | 125 |
| 2010 | 53 | 120 |
| 2011 | 43 | 106 |
| 2012 | 58 | 88 |
| 2013 | 69 | 128 |
| 2014 | 56 | 120 |
| 2015 | 73 | 138 |
| 2016 | 88 | 127 |
| 2017 | 121 | 181 |
| 2018 | 143 | 173 |
| 2019 | 168 | 187 |
| 2020 | 158 | 206 |
| 2021 | 135 | 178 |
| 2022 | 182 | 186 |
| 2023 | 144 | 149 |
| 2024 | 138 | 199 |
| 2025 | 153 | 188 |
| 2026 | 93 | 139 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25B 9/002Compression machines, plants or systems, in which the refrigerant is air or1,910
- F25B 9/14Compression machines, plants or systems, in which the refrigerant is air or1,317
- F25B 9/02Compression machines, plants or systems, in which the refrigerant is air or415
- F25B 9/10Compression machines, plants or systems, in which the refrigerant is air or327
- F25B 9/06Compression machines, plants or systems, in which the refrigerant is air or306
- F25B 9/12Compression machines, plants or systems, in which the refrigerant is air or69
- F25B 9/08Compression machines, plants or systems, in which the refrigerant is air or58
Recent patents
- Cooling system of a cold platform at cryogenic temperature and method thereof6 Oct 2026US 12,753,951 B2
- System and method for detection and correction of reverse flow in an ejector refrigeration circuit6 Oct 2026US 12,753,952 B2Carrier Corporation
- Cryogenic cooling device6 Oct 2026US 12,753,953 B2Sumitomo Heavy Industries, Ltd.
- Hybrid double-inlet valve for pulse tube cryocooler6 Oct 2026US 12,753,954 B2Sumitomo (SHI) Cryogenics of America, Inc.
- Refrigerant circulation system29 Sep 2026US 12,747,898 B2Mazda Motor Corporation
- Ambient temperature thermal adapter for supercritical carbon dioxide power cycle8 Oct 2026US 2026/0309058 A1TerraPower, LLC
- Cryopump8 Oct 2026US 2026/0309139 A1Sumitomo Heavy Industries, Ltd.
- Cooling System for a Dilution Refrigerator System8 Oct 2026US 2026/0309373 A1Orange Quantum Systems Holding B.V.
- Vortex tube assembly, charger, and cooling system1 Oct 2026US 2026/0298505 A1Hyundai Motor Company
- Cryogenic cooling system1 Oct 2026US 2026/0298507 A1Oxford NanoScience Limited
Most cited
By later US patents
- Electroactive polymer devices1,577US 6,545,384 B1SRI International · 2003
- Cryosurgical instrument with vent means and method using same350US 5,520,682 ACryomedical Sciences, Inc. · 1996
- Microcomponent chemical process sheet architecture299US 5,811,062 ABattelle Memorial Institute · 1998
- Portable device for preserving organs by static storage or perfusion282US 5,586,438 ALRT, Inc. · 1996
- Compressed air energy storage method and system274US 5,537,822 AThe Israel Electric Corporation Ltd. · 1996