F25B 9/004
The refrigerant being air
Official title: {the refrigerant being air}
F25B9/004 (The refrigerant being air) appears on 327 US grants and 244 published applications in this corpus.
Search patents in F25B- Granted patents
- 327
- Published applications
- 244
- Assignees
- 153
- Inventors
- 484
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 11 | 0 |
| 1995 | 4 | 0 |
| 1996 | 12 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 2 |
| 2002 | 12 | 1 |
| 2003 | 6 | 6 |
| 2004 | 6 | 5 |
| 2005 | 6 | 6 |
| 2006 | 4 | 6 |
| 2007 | 3 | 8 |
| 2008 | 3 | 2 |
| 2009 | 0 | 10 |
| 2010 | 2 | 9 |
| 2011 | 2 | 4 |
| 2012 | 9 | 1 |
| 2013 | 9 | 7 |
| 2014 | 1 | 3 |
| 2015 | 7 | 9 |
| 2016 | 2 | 16 |
| 2017 | 2 | 11 |
| 2018 | 16 | 17 |
| 2019 | 11 | 15 |
| 2020 | 18 | 12 |
| 2021 | 14 | 15 |
| 2022 | 11 | 16 |
| 2023 | 16 | 18 |
| 2024 | 15 | 22 |
| 2025 | 20 | 15 |
| 2026 | 10 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air conditioning system and transportation system including same11 Aug 2026US 12,704,296 B2Thevu LLC
- Method and equipment for refrigeration4 Aug 2026US 12,698,924 B2Fluid & Thermal Management, S.L.
- Motor integrated auxiliary bearings for aircraft machines28 Jul 2026US 12,693,047 B2Hamilton Sundstrand Corporation
- Mid-pressure water separation for environmental control system16 Jun 2026US 12,654,119 B2Hamilton Sundstrand Corporation
- Cabin air compressor bypass for surge avoidance26 May 2026US 12,638,223 B2Hamilton Sundstrand Corporation
- 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
- Test stand2 Apr 2026US 2026/0092833 A1The Boeing Company
- Air cycle machine speed sensor assembly2 Apr 2026US 2026/0092941 A1The Boeing Company
Most cited
By later US patents
- 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
- Regenerative condensing cycle163US 5,461,882 AUnited Technologies Corporation · 1995
- Integrated air conditioning and power unit147US 5,899,085 AMcDonnell Douglas Corporation · 1999
- Environmental control system condensing cycle88US 5,086,622 AUnited Technologies Corporation · 1992