F04C 2210/26
Refrigerants with particular properties
Official title: Refrigerants with particular properties, e.g. HFC-134a
F04C2210/26 (Refrigerants with particular properties) appears on 301 US grants and 285 published applications in this corpus.
Search patents in F04C- Granted patents
- 301
- Published applications
- 285
- Assignees
- 95
- Inventors
- 731
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 13 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 2 |
| 2002 | 8 | 5 |
| 2003 | 4 | 6 |
| 2004 | 3 | 8 |
| 2005 | 4 | 4 |
| 2006 | 2 | 2 |
| 2007 | 5 | 1 |
| 2008 | 2 | 4 |
| 2009 | 0 | 2 |
| 2010 | 4 | 4 |
| 2011 | 2 | 6 |
| 2012 | 1 | 4 |
| 2013 | 3 | 4 |
| 2014 | 3 | 7 |
| 2015 | 3 | 8 |
| 2016 | 8 | 10 |
| 2017 | 3 | 40 |
| 2018 | 17 | 32 |
| 2019 | 29 | 21 |
| 2020 | 20 | 33 |
| 2021 | 25 | 25 |
| 2022 | 28 | 18 |
| 2023 | 16 | 16 |
| 2024 | 22 | 11 |
| 2025 | 11 | 8 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Use of a composition as refrigerant in compressor, compressor, and refrigeration cycle apparatus28 Jul 2026US 12,692,425 B2Daikin Industries, Ltd.
- Use of composition as refrigerant in compressor, compressor, and refrigeration cycle apparatus12 May 2026US 12,624,266 B2Daikin Industries, Ltd.
- Compressor module4 Nov 2025US 12,460,637 B2Hanon Systems
- Compact low noise rotary compressor21 Oct 2025US 12,448,971 B2Aspen Compressor, LLC
- Compressor19 Aug 2025US 12,392,341 B2Mitsubishi Heavy Industries Thermal Systems, Ltd.
- Compressor and refrigeration apparatus16 Apr 2026US 2026/0104047 A1Daikin Industries, Ltd.
- Method of inhibiting disproportionation reaction of refrigeration-cycle working fluid, refrigeration-cycle working fluid, and refrigeration cycle apparatus9 Apr 2026US 2026/0098197 A1Panasonic Intellectual Property Management Co., Ltd.
- 2-cylinder rotary compressor15 Jan 2026US 2026/0016010 A1Daikin Industries, Ltd.
- Rotary compressor and refrigeration apparatus1 Jan 2026US 2026/0002533 A1Daikin Industries, Ltd.
- Compressor11 Dec 2025US 2025/0376981 A1Carrier Japan Corporation
Most cited
By later US patents
- Rotary compressor with reduced lubrication sensitivity147US 5,947,710 ACarrier Corporation · 1999
- Compressible lubricant with memory combined with anaerobic pipe sealant104US 5,431,831 A1995
- Method for forming panel door with simulated wood grains85US 5,075,059 APease Industries, Inc. · 1991
- Refrigeration lubricating oil compositions75US 4,267,064 AMatsushita Electric Industrial Co., Ltd. · 1981
- Refrigerating apparatus58US 6,240,736 B1Hitachi, Ltd. · 2001