F25B 9/02
Compression machines, plants or systems, in which the refrigerant is air or
Official title: using Joule-Thompson effect; using vortex effect
F25B9/02 (Compression machines, plants or systems, in which the refrigerant is air or) appears on 415 US grants and 270 published applications in this corpus.
Search patents in F25B- Granted patents
- 415
- Published applications
- 270
- Assignees
- 264
- Inventors
- 722
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 11 | 0 |
| 1982 | 5 | 0 |
| 1983 | 10 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 10 | 0 |
| 1987 | 8 | 0 |
| 1988 | 10 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 9 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 7 | 0 |
| 1996 | 14 | 0 |
| 1997 | 10 | 0 |
| 1998 | 10 | 0 |
| 1999 | 12 | 0 |
| 2000 | 10 | 0 |
| 2001 | 6 | 3 |
| 2002 | 16 | 6 |
| 2003 | 9 | 5 |
| 2004 | 2 | 9 |
| 2005 | 4 | 17 |
| 2006 | 6 | 10 |
| 2007 | 10 | 8 |
| 2008 | 10 | 13 |
| 2009 | 4 | 10 |
| 2010 | 6 | 6 |
| 2011 | 1 | 8 |
| 2012 | 3 | 2 |
| 2013 | 6 | 7 |
| 2014 | 5 | 13 |
| 2015 | 5 | 12 |
| 2016 | 4 | 15 |
| 2017 | 16 | 20 |
| 2018 | 18 | 17 |
| 2019 | 14 | 19 |
| 2020 | 13 | 9 |
| 2021 | 17 | 14 |
| 2022 | 15 | 5 |
| 2023 | 5 | 11 |
| 2024 | 6 | 9 |
| 2025 | 9 | 10 |
| 2026 | 4 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cooling system of a cold platform at cryogenic temperature and method thereof6 Oct 2026US 12,753,951 B2
- Cryogenic cooling device6 Oct 2026US 12,753,953 B2Sumitomo Heavy Industries, Ltd.
- Cryosurgical probe and method of manufacturing thereof7 Apr 2026US 12,594,110 B2Metrum Cryoflex S.A.
- Vortex tube including secondary inlet with swirl generator13 Jan 2026US 12,523,398 B2Khalifa University of Science and Technology
- Hydrogen or helium throttling liquefaction system using direct current flow from the cold and hot ends of the regenerative cryocoolers23 Dec 2025US 12,504,225 B2Zhejiang University
- Vortex tube assembly, charger, and cooling system1 Oct 2026US 2026/0298505 A1Hyundai Motor Company
- Liquid water source collection apparatus, air conditioner, control method20 Aug 2026US 2026/0243464 A1Shenzhen Roborock Innovation Technology Co., Ltd.
- Adiabatic thermal regulator16 Jul 2026US 2026/0202103 A1Polytech Forge LLC
- Passive pressure amplification device16 Jul 2026US 2026/0202864 A1Polytech Forge LLC
- Venturi assisted bi-conical chamber, a toroidal venturi vortex system and a method of cooling30 Apr 2026US 2026/0118019 A1Unitech Synergies Limited
Most cited
By later US patents
- Cryosurgical instrument with vent means and method using same350US 5,520,682 ACryomedical Sciences, Inc. · 1996
- Cryosurgical apparatus and method265US 4,275,734 AValleylab, Inc. · 1981
- Cryo-probe244US 5,452,582 AAPD Cryogenics, Inc. · 1995
- Cryosurgical instrument193US 4,377,168 AWallach Surgical Instruments, Inc. · 1983
- Cryoplasty apparatus and method181US 6,875,209 B2Galil Medical Ltd. · 2005