F25J 2270/908
By regenerative chillers, i.e. oscillating or dynamic systems
Official title: by regenerative chillers, i.e. oscillating or dynamic systems, e.g. Stirling refrigerator, thermoelectric ("Peltier") or magnetic refrigeration
F25J2270/908 (By regenerative chillers, i.e. oscillating or dynamic systems) appears on 79 US grants and 92 published applications in this corpus.
Search patents in F25J- Granted patents
- 79
- Published applications
- 92
- Assignees
- 76
- Inventors
- 222
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 1 |
| 2003 | 4 | 0 |
| 2004 | 3 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 6 |
| 2007 | 4 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 4 |
| 2010 | 0 | 4 |
| 2011 | 1 | 3 |
| 2012 | 0 | 0 |
| 2013 | 0 | 7 |
| 2014 | 2 | 3 |
| 2015 | 2 | 3 |
| 2016 | 0 | 5 |
| 2017 | 4 | 10 |
| 2018 | 2 | 5 |
| 2019 | 8 | 5 |
| 2020 | 5 | 2 |
| 2021 | 2 | 5 |
| 2022 | 2 | 6 |
| 2023 | 3 | 3 |
| 2024 | 3 | 7 |
| 2025 | 4 | 3 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automated stirling peltier liquid air battery16 Jun 2026US 12,656,025 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Rotating magnetic field generation device, magnetic refrigeration device, and hydrogen liquefaction device31 Mar 2026US 12,590,739 B2Hitachi, Ltd.
- Two opening Dewar with desiccant annulus3 Feb 2026US 12,540,759 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Cryocooler suitable for gas liquefaction applications, gas liquefaction system and method comprising the same21 Oct 2025US 12,449,196 B2Consejo Superior De Investigaciones Cientificas (Csic)
- Progressively chilled gas separation tanks2 Sep 2025US 12,405,056 B1Lunar Helium-3 Mining, LLC
- Gas liquefaction system17 Sep 2026US 2026/0276300 A1Kawasaki Jukogyo Kabushiki Kaisha
- Cryogenic cooling system3 Sep 2026US 2026/0257609 A1
- Magnetic refrigeration system and facility20 Aug 2026US 2026/0243477 A1Kawasaki Jukogyo Kabushiki Kaisha
- Device for purifying and liquefying helium and associated method20 Aug 2026US 2026/0243504 A1Bruker Switzerland AG
- Reciprocating rapid cooldown loop for cryogenic devices28 May 2026US 2026/0146789 A1Maybell Quantum Industries, Inc.
Most cited
By later US patents
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator136US 5,979,440 ASeQual Technologies, Inc. · 1999
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator133US 6,698,423 B1SeQual Technologies, Inc. · 2004
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator101US 6,681,764 B1SeQual Technologies, Inc. · 2004
- Active magnetic regenerator method and apparatus96US 5,249,424 AAstronautics Corporation of America · 1993
- Ericsson cycle machine93US 4,984,432 A1991