C09K 5/04
The change of state being from liquid to vapour or vice versa
Official title: the change of state being from liquid to vapour or vice versa
C09K5/04 (The change of state being from liquid to vapour or vice versa) appears on 2,214 US grants and 2,495 published applications in this corpus.
Search patents in C09K- Granted patents
- 2,214
- Published applications
- 2,495
- Assignees
- 599
- Inventors
- 2,644
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 12 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 21 | 0 |
| 1985 | 13 | 0 |
| 1986 | 11 | 0 |
| 1987 | 10 | 0 |
| 1988 | 17 | 0 |
| 1989 | 7 | 0 |
| 1990 | 24 | 0 |
| 1991 | 40 | 0 |
| 1992 | 21 | 0 |
| 1993 | 36 | 0 |
| 1994 | 31 | 0 |
| 1995 | 45 | 0 |
| 1996 | 39 | 0 |
| 1997 | 55 | 0 |
| 1998 | 67 | 0 |
| 1999 | 32 | 0 |
| 2000 | 46 | 0 |
| 2001 | 64 | 18 |
| 2002 | 50 | 38 |
| 2003 | 58 | 51 |
| 2004 | 32 | 49 |
| 2005 | 29 | 57 |
| 2006 | 27 | 44 |
| 2007 | 32 | 56 |
| 2008 | 33 | 59 |
| 2009 | 31 | 66 |
| 2010 | 26 | 79 |
| 2011 | 48 | 98 |
| 2012 | 38 | 97 |
| 2013 | 54 | 101 |
| 2014 | 63 | 93 |
| 2015 | 82 | 121 |
| 2016 | 66 | 149 |
| 2017 | 106 | 136 |
| 2018 | 107 | 144 |
| 2019 | 127 | 140 |
| 2020 | 114 | 182 |
| 2021 | 99 | 149 |
| 2022 | 98 | 145 |
| 2023 | 81 | 125 |
| 2024 | 58 | 107 |
| 2025 | 71 | 105 |
| 2026 | 63 | 86 |
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
- Economizer and boiler8 Oct 2026US 2026/0309323 A1Kurita Water Industries Ltd.
- Purge device and production method for separation membrane1 Oct 2026US 2026/0295514 A1Mitsubishi Heavy Industries, Ltd.
- Compositions1 Oct 2026US 2026/0297407 A1
Most cited
By later US patents
- Refrigeration lubricants168US 4,755,316 AAllied-Signal Inc. · 1988
- High efficiency absorption heat pump and methods of use143US 7,313,926 B2Rexorce Thermionics, Inc. · 2008
- Auxiliary heating and air conditioning system for a motor vehicle139US 5,901,572 ARocky Research · 1999
- 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