C09K 5/041
For compression-type refrigeration systems
Official title: {for compression-type refrigeration systems}
C09K5/041 (For compression-type refrigeration systems) appears on 1,885 US grants and 2,209 published applications in this corpus.
Search patents in C09K- Granted patents
- 1,885
- Published applications
- 2,209
- Assignees
- 433
- Inventors
- 1,917
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 7 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 21 | 0 |
| 1991 | 36 | 0 |
| 1992 | 18 | 0 |
| 1993 | 32 | 0 |
| 1994 | 22 | 0 |
| 1995 | 36 | 0 |
| 1996 | 34 | 0 |
| 1997 | 48 | 0 |
| 1998 | 51 | 0 |
| 1999 | 25 | 0 |
| 2000 | 38 | 0 |
| 2001 | 54 | 15 |
| 2002 | 41 | 35 |
| 2003 | 52 | 46 |
| 2004 | 27 | 45 |
| 2005 | 28 | 56 |
| 2006 | 26 | 41 |
| 2007 | 31 | 48 |
| 2008 | 29 | 51 |
| 2009 | 29 | 63 |
| 2010 | 25 | 67 |
| 2011 | 44 | 85 |
| 2012 | 36 | 87 |
| 2013 | 50 | 89 |
| 2014 | 58 | 79 |
| 2015 | 73 | 111 |
| 2016 | 66 | 139 |
| 2017 | 98 | 119 |
| 2018 | 98 | 124 |
| 2019 | 109 | 122 |
| 2020 | 101 | 162 |
| 2021 | 84 | 131 |
| 2022 | 85 | 126 |
| 2023 | 70 | 108 |
| 2024 | 50 | 95 |
| 2025 | 60 | 92 |
| 2026 | 53 | 73 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compositions and uses of trans-1,1,1,4,4,4-hexafluoro-2-butene and 1,1-difluoroethane (R-152A)15 Sep 2026US 12,734,388 B2The Chemours Company Fc, LLC
- Cryosurgery coolant delivery system and method of preparing and using the same8 Sep 2026US 12,727,929 B2Cool Renewal, LLC
- Method for producing purified trans-1,2-difluoroethylene (HFO-1132(E)) and/or 1,1,2-trifluoroethylene (HFO-1123)8 Sep 2026US 12,729,172 B2Daikin Industries, Ltd.
- Composition containing refrigerant, and method for stabilizing composition containing refrigerant8 Sep 2026US 12,729,331 B2Daikin Industries, Ltd.
- Sterically hindered hydrofluoroolefins with dipole moment and their blends with sterically hindered-olefins as refrigerants for high temperature heat pumps and working fluid for organic Rankine cycles8 Sep 2026US 12,729,332 B2Carbon Ventures, LLC
- Compositions8 Oct 2026US 2026/0308433 A1
- Hfo-1234ze, hfo-1225zc and hfo-1234yf containing compositions and processes for producing and using the compositions8 Oct 2026US 2026/0308434 A1The Chemours Company Fc, LLC
- Purge device and production method for separation membrane1 Oct 2026US 2026/0295514 A1Mitsubishi Heavy Industries, Ltd.
- Compositions1 Oct 2026US 2026/0297407 A1
- Hfo-1234ze and hfo-1234yf compositions and processes for producing and using the compositions24 Sep 2026US 2026/0285786 A1The Chemours Company Fc, LLC
Most cited
By later US patents
- Refrigeration lubricants168US 4,755,316 AAllied-Signal Inc. · 1988
- Halocarbon blends for refrigerant use112US 4,810,403 AE. I. Du Pont de Nemours and Company · 1989
- Lubricants for refrigeration compressors105US 4,851,144 AThe Dow Chemical Company · 1989
- Multistage rapid product refrigeration apparatus and method105US 6,148,634 A3M Innovative Properties Company · 2000
- Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluoroethane102US 5,182,040 AE. I. Du Pont de Nemours and Company · 1993