F25B 2309/02
Gas cycle refrigeration machines: using the joule-thompson effect
Official title: using the Joule-Thompson effect
F25B2309/02 (Gas cycle refrigeration machines: using the joule-thompson effect) appears on 88 US grants and 37 published applications in this corpus.
Search patents in F25B- Granted patents
- 88
- Published applications
- 37
- Assignees
- 58
- Inventors
- 131
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 0 | 4 |
| 2019 | 4 | 6 |
| 2020 | 4 | 2 |
| 2021 | 2 | 6 |
| 2022 | 8 | 4 |
| 2023 | 2 | 2 |
| 2024 | 4 | 1 |
| 2025 | 0 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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.
- Low energy consumption refrigeration system with a rotary pressure exchanger replacing the bulk flow compressor and the high pressure expansion system31 Dec 2024US 12,181,195 B2Energy Recovery, Inc.
- Miniature Joule-Thomson cryocooler operating at liquid helium temperatures3 Sep 2024US 12,078,400 B2Tsinghua University
- Joule-Thompson cooler actuation systems11 Jun 2024US 12,007,212 B2Simmonds Precision Products, Inc.
- Condensing device16 Apr 2026US 2026/0104201 A1NGK Insulators, Ltd.
- Joule-thomson cryocooler4 Sep 2025US 2025/0277607 A1Sumitomo Heavy Industries, Ltd.
- Low energy consumption refrigeration system with a rotary pressure exchanger replacing the bulk flow compressor and the high pressure expansion valve20 Mar 2025US 2025/0093077 A1Energy Recovery, Inc.
- Cryogenic cooling device14 Nov 2024US 2024/0377107 A1Sumitomo Heavy Industries, Ltd.
- Cryosurgical probe and method of manufacturing thereof15 Jun 2023US 2023/0181230 A1Metrum Cryoflex Sp. z. o. o., Sp. k.
Most cited
By later US patents
- Cryo-probe244US 5,452,582 AAPD Cryogenics, Inc. · 1995
- Cryosurgical instrument238US 5,275,595 A1994
- Entrained cryogenic droplet transfer method and cryosurgical instrument201US 5,324,286 AArthur A. Fowle, Inc. · 1994
- Cryosurgical instrument193US 4,377,168 AWallach Surgical Instruments, Inc. · 1983
- Cryogenic surgical instrument152US 3,971,383 AErbe Elektromedizin GmbH · 1976