F25B 9/06
Compression machines, plants or systems, in which the refrigerant is air or
Official title: using expanders (F25B9/10 takes precedence)
F25B9/06 (Compression machines, plants or systems, in which the refrigerant is air or) appears on 306 US grants and 364 published applications in this corpus.
Search patents in F25B- Granted patents
- 306
- Published applications
- 364
- Assignees
- 156
- Inventors
- 631
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 2 |
| 2002 | 6 | 1 |
| 2003 | 7 | 5 |
| 2004 | 3 | 9 |
| 2005 | 6 | 3 |
| 2006 | 1 | 5 |
| 2007 | 1 | 14 |
| 2008 | 2 | 9 |
| 2009 | 2 | 15 |
| 2010 | 10 | 22 |
| 2011 | 5 | 13 |
| 2012 | 9 | 12 |
| 2013 | 8 | 14 |
| 2014 | 9 | 6 |
| 2015 | 10 | 17 |
| 2016 | 10 | 15 |
| 2017 | 11 | 24 |
| 2018 | 13 | 12 |
| 2019 | 17 | 19 |
| 2020 | 17 | 14 |
| 2021 | 11 | 14 |
| 2022 | 16 | 29 |
| 2023 | 19 | 24 |
| 2024 | 15 | 29 |
| 2025 | 23 | 23 |
| 2026 | 14 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cooling system including hydraulic liquid-refrigerant compressors and expanders for delivering pressurized liquid to the compressors8 Sep 2026US 12,729,886 B2
- Air conditioning system and transportation system including same11 Aug 2026US 12,704,296 B2Thevu LLC
- Mid-pressure water separation for environmental control system16 Jun 2026US 12,654,119 B2Hamilton Sundstrand Corporation
- Gas energized seal for Gifford-McMahon expander26 May 2026US 12,638,220 B2Sumitomo (Shi) Cryogenic of America, Inc.
- Cabin air compressor bypass for surge avoidance26 May 2026US 12,638,223 B2Hamilton Sundstrand Corporation
- Trim cooling system with a power generation mode17 Sep 2026US 2026/0276249 A1Schneider Electric It Corporation
- Bumper retainer for cryogenic expander systems13 Aug 2026US 2026/0235329 A1Sumitomo (SHI) Cryogenics of America, Inc.
- Reefer container11 Jun 2026US 2026/0160476 A1Mitsubishi Heavy Industries, Ltd.
- Refrigeration system21 May 2026US 2026/0139879 A1Mitsubishi Heavy Industries, Ltd.
- Air conditioning system and transportation system including same23 Apr 2026US 2026/0110460 A1Thevu LLC
Most cited
By later US patents
- Use of regenerator in thermodynamic cycle system54US 10,082,045 B2X Development LLC · 2018
- Method and apparatus for cooling superconductor54US 6,354,087 B1Sumitomo Electric Industries, Ltd. · 2002
- Storage of excess heat in cold side of heat engine53US 10,233,787 B2Malta Inc. · 2019
- Adiabatic salt electric energy storage52US 9,932,830 B2X Development LLC · 2018
- Cryogenic industrial gas liquefaction with hybrid refrigeration generation48US 6,041,620 APraxair Technology, Inc. · 2000