F28F 21/04
Constructions of heat-exchange apparatus characterised by the selection of particular materials: of
Official title: of ceramic; of concrete; of natural stone
F28F21/04 (Constructions of heat-exchange apparatus characterised by the selection of particular materials: of) appears on 449 US grants and 401 published applications in this corpus.
Search patents in F28F- Granted patents
- 449
- Published applications
- 401
- Assignees
- 302
- Inventors
- 1,085
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 10 | 0 |
| 1981 | 14 | 0 |
| 1982 | 17 | 0 |
| 1983 | 8 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 11 | 0 |
| 1987 | 11 | 0 |
| 1988 | 8 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 11 | 0 |
| 1997 | 14 | 0 |
| 1998 | 8 | 0 |
| 1999 | 15 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 2 |
| 2003 | 4 | 4 |
| 2004 | 4 | 8 |
| 2005 | 3 | 7 |
| 2006 | 2 | 3 |
| 2007 | 8 | 8 |
| 2008 | 1 | 12 |
| 2009 | 3 | 9 |
| 2010 | 6 | 13 |
| 2011 | 7 | 16 |
| 2012 | 6 | 17 |
| 2013 | 7 | 16 |
| 2014 | 4 | 19 |
| 2015 | 10 | 23 |
| 2016 | 5 | 18 |
| 2017 | 13 | 29 |
| 2018 | 16 | 37 |
| 2019 | 27 | 33 |
| 2020 | 23 | 21 |
| 2021 | 17 | 23 |
| 2022 | 17 | 23 |
| 2023 | 15 | 24 |
| 2024 | 14 | 15 |
| 2025 | 14 | 14 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Three-channel heat sink based on tri-continuous mesoporous silica structure and preparation method for three-channel heat sink21 Apr 2026US 12,607,420 B2Shanghai Jiao Tong University
- Ceramic thermal device with three-layer vapor chamber7 Apr 2026US 12,595,974 B2KYOCERA Corporation
- Heat storage device, power generator, and heat generator13 Jan 2026US 12,523,433 B2Shinko Electric Industries Co., Ltd.
- Thermal energy storage device and system6 Jan 2026US 12,516,891 B2Lehigh University
- Transpirational cooling panel16 Dec 2025US 12,498,186 B2The Boeing Company
- Latent heat storage member10 Sep 2026US 2026/0266561 A1Shinko Electric Industries Co., Ltd.
- Method of Electromagnetic Welding of Molded Parts and a Heat Sink for Use in Such Method13 Aug 2026US 2026/0233470 A1KVE Composites B.V.
- Heat exchanger and burner4 Jun 2026US 2026/0153292 A1NGK Insulators, Ltd.
- Radiative heatsink30 Apr 2026US 2026/0118071 A1Maxwell Labs Inc.
- Refractory metal heat exchangers with embedded sensors and related methods26 Mar 2026US 2026/0085899 A1Battelle Energy Alliance, LLC
Most cited
By later US patents
- Multi-channel optical detection system202US 6,369,893 B1Cepheid · 2002
- Heat exchanging, optically interrogated chemical reaction assembly156US 6,565,815 B1Cepheid · 2003
- Multi-channel optical detection system114US 6,940,598 B2Cepheid · 2005
- Apparatus and reaction vessel for controlling the temperature of a sample97US 7,255,833 B2Cepheid · 2007
- Coated ceramic structure and method of making same88US 4,568,595 A1986