F28D 15/00
Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into
Official title: Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls {; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies (F28D17/00, F28D19/00, F28D20/00 take precedence)}
F28D15/00 (Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into) appears on 5,474 US grants and 7,185 published applications in this corpus.
Search patents in F28D- Granted patents
- 5,474
- Published applications
- 7,185
- Assignees
- 2,147
- Inventors
- 10,589
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 46 | 0 |
| 1977 | 52 | 0 |
| 1978 | 43 | 0 |
| 1979 | 22 | 0 |
| 1980 | 34 | 0 |
| 1981 | 42 | 0 |
| 1982 | 43 | 0 |
| 1983 | 39 | 0 |
| 1984 | 45 | 0 |
| 1985 | 34 | 0 |
| 1986 | 35 | 0 |
| 1987 | 34 | 0 |
| 1988 | 29 | 0 |
| 1989 | 51 | 0 |
| 1990 | 47 | 0 |
| 1991 | 37 | 0 |
| 1992 | 29 | 0 |
| 1993 | 36 | 0 |
| 1994 | 44 | 0 |
| 1995 | 31 | 0 |
| 1996 | 34 | 0 |
| 1997 | 40 | 0 |
| 1998 | 51 | 0 |
| 1999 | 49 | 0 |
| 2000 | 72 | 0 |
| 2001 | 80 | 35 |
| 2002 | 79 | 97 |
| 2003 | 74 | 144 |
| 2004 | 104 | 161 |
| 2005 | 116 | 263 |
| 2006 | 160 | 257 |
| 2007 | 109 | 323 |
| 2008 | 117 | 297 |
| 2009 | 127 | 314 |
| 2010 | 167 | 356 |
| 2011 | 150 | 311 |
| 2012 | 125 | 342 |
| 2013 | 158 | 403 |
| 2014 | 178 | 360 |
| 2015 | 213 | 309 |
| 2016 | 212 | 327 |
| 2017 | 220 | 318 |
| 2018 | 258 | 318 |
| 2019 | 307 | 369 |
| 2020 | 285 | 382 |
| 2021 | 253 | 305 |
| 2022 | 224 | 278 |
| 2023 | 215 | 265 |
| 2024 | 218 | 232 |
| 2025 | 186 | 247 |
| 2026 | 120 | 172 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Connector apparatus for electric charging cable6 Oct 2026US 12,755,866 B2The Board of Regents of the University of Oklahoma
- Main body sheet for vapor chamber, vapor chamber, and electronic apparatus6 Oct 2026US 12,757,355 B2Dai Nippon Printing Co.Ltd.
- Loop heat pipe for staged reentry spacecraft29 Sep 2026US 12,747,038 B1The United States of America as represented by the Secretary of the Air Force
- Heat pipe thermal expansion modification29 Sep 2026US 12,747,916 B2Westinghouse Electric Corp.
- Medical cooling device and cooling method using the same15 Sep 2026US 12,734,065 B2RecensMedical, Inc.
- Oscillating heat pipe with phase change material1 Oct 2026US 2026/0298548 A1Raytheon Company
- Oscillating heat pipe with biphilic fluid channels24 Sep 2026US 2026/0287269 A1Raytheon Company
- Heat pipe24 Sep 2026US 2026/0287270 A1Fujikura Ltd.
- Vapor chamber supporting capillary structure24 Sep 2026US 2026/0287271 A1Nidec Chaun-Choung Technology Corporation
- Oscillating heat pipes operable within high gravity force equivalent (g-force) environments24 Sep 2026US 2026/0287272 A1Raytheon Company
Most cited
By later US patents
- Electronic device806US 9,313,915 B2ASUSTek · 2016
- System for monitoring health, wellness and fitness having a method and apparatus for improved measurement of heat flow688US 6,595,929 B2BodyMedia, Inc. · 2003
- Computing infrastructure672US 8,706,914 B22014
- Susceptor heater and method of heating a substrate522US 8,933,375 B2ASM IP Holding B. V. · 2015
- Active thermal control of ultrasound transducers514US 5,560,362 AAcuson Corporation · 1996