C09K 5/02
Materials undergoing a change of physical state when used
Official title: Materials undergoing a change of physical state when used (C09K5/16, C09K5/20 take precedence)
C09K5/02 (Materials undergoing a change of physical state when used) appears on 3,078 US grants and 3,504 published applications in this corpus.
Search patents in C09K- Granted patents
- 3,078
- Published applications
- 3,504
- Assignees
- 1,141
- Inventors
- 5,099
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 19 | 0 |
| 1978 | 14 | 0 |
| 1979 | 9 | 0 |
| 1980 | 17 | 0 |
| 1981 | 28 | 0 |
| 1982 | 17 | 0 |
| 1983 | 21 | 0 |
| 1984 | 38 | 0 |
| 1985 | 30 | 0 |
| 1986 | 23 | 0 |
| 1987 | 23 | 0 |
| 1988 | 27 | 0 |
| 1989 | 15 | 0 |
| 1990 | 31 | 0 |
| 1991 | 47 | 0 |
| 1992 | 29 | 0 |
| 1993 | 45 | 0 |
| 1994 | 36 | 0 |
| 1995 | 57 | 0 |
| 1996 | 49 | 0 |
| 1997 | 60 | 0 |
| 1998 | 85 | 0 |
| 1999 | 46 | 0 |
| 2000 | 65 | 0 |
| 2001 | 79 | 20 |
| 2002 | 63 | 53 |
| 2003 | 73 | 74 |
| 2004 | 44 | 73 |
| 2005 | 38 | 80 |
| 2006 | 34 | 54 |
| 2007 | 41 | 73 |
| 2008 | 39 | 78 |
| 2009 | 41 | 85 |
| 2010 | 39 | 109 |
| 2011 | 64 | 132 |
| 2012 | 53 | 128 |
| 2013 | 68 | 133 |
| 2014 | 76 | 120 |
| 2015 | 107 | 169 |
| 2016 | 88 | 206 |
| 2017 | 135 | 199 |
| 2018 | 147 | 203 |
| 2019 | 172 | 209 |
| 2020 | 159 | 246 |
| 2021 | 139 | 214 |
| 2022 | 140 | 203 |
| 2023 | 114 | 177 |
| 2024 | 90 | 162 |
| 2025 | 106 | 170 |
| 2026 | 88 | 134 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for enhanced heat transfer loops22 Sep 2026US 12,742,575 B2Solvcor Technologies LLC
- 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
- High thermal conductivity phase change composite15 Sep 2026US 12,735,615 B2Rogers Corporation
- 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.
- 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
- Thermally conductive member, thermally conductive composition, structure, and method for reworking structure8 Oct 2026US 2026/0308435 A1Sekisui Chemical Co., Ltd.
- 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.
Most cited
By later US patents
- Phase change material thermal capacitor clothing196US 6,855,410 B22005
- Phase change thermal control materials, method and apparatus174US 5,722,482 A1998
- 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
- Phase change thermal control materials, method and apparatus140US 6,319,599 B12001