F28D 21/0003
The heat being recuperated from exhaust gases
Official title: {the heat being recuperated from exhaust gases (F28D21/0014 takes precedence)}
F28D21/0003 (The heat being recuperated from exhaust gases) appears on 1,051 US grants and 1,168 published applications in this corpus.
Search patents in F28D- Granted patents
- 1,051
- Published applications
- 1,168
- Assignees
- 545
- Inventors
- 2,507
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 14 | 0 |
| 1978 | 16 | 0 |
| 1979 | 16 | 0 |
| 1980 | 18 | 0 |
| 1981 | 22 | 0 |
| 1982 | 19 | 0 |
| 1983 | 19 | 0 |
| 1984 | 21 | 0 |
| 1985 | 13 | 0 |
| 1986 | 15 | 0 |
| 1987 | 14 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 16 | 5 |
| 2002 | 9 | 10 |
| 2003 | 10 | 23 |
| 2004 | 12 | 19 |
| 2005 | 11 | 32 |
| 2006 | 25 | 34 |
| 2007 | 18 | 40 |
| 2008 | 11 | 56 |
| 2009 | 13 | 44 |
| 2010 | 20 | 47 |
| 2011 | 24 | 40 |
| 2012 | 16 | 57 |
| 2013 | 28 | 59 |
| 2014 | 28 | 62 |
| 2015 | 39 | 85 |
| 2016 | 43 | 77 |
| 2017 | 54 | 85 |
| 2018 | 65 | 70 |
| 2019 | 83 | 84 |
| 2020 | 60 | 53 |
| 2021 | 48 | 48 |
| 2022 | 50 | 45 |
| 2023 | 42 | 36 |
| 2024 | 29 | 24 |
| 2025 | 36 | 20 |
| 2026 | 12 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heat exchanger unit and method for fluid to passively bypassing a heat exchanger28 Jul 2026US 12,693,079 B2Bosal Flanders NV
- Plate heat exhanger arrangement, use of it in exhaust gas heat recovery and method for recovering heat from exhaust gas7 Jul 2026US 12,674,625 B2Vahterus Oy
- Method for heat recovery in a compressor and a compressor19 May 2026US 12,631,175 B2Tamturbo Oyj
- Gas treatment component19 May 2026US 12,631,400 B2Bosal Flanders NV
- Heat exchanger baffles and methods for manufacturing the same19 May 2026US 12,631,409 B2Bradford White Corporation
- Exhaust heat recovery device8 Oct 2026US 2026/0309067 A1
- High temperature heat pumps10 Sep 2026US 2026/0266563 A1TerraPower, LLC
- Heat exchanger3 Sep 2026US 2026/0259010 A1Komatsu Ltd.
- High-efficiency waste heat recovery sizing machine27 Aug 2026US 2026/0251393 A1Shaoxing Yongfeng Energy Saving Technology Co., Ltd.
- Economizers for waste heat recovery systems27 Aug 2026US 2026/0251406 A1Scope Technology and Manufacturing, LLC
Most cited
By later US patents
- Hydraulic fracturing system and method179US 9,840,897 B22017
- Precooling heat exchange arrangement integral with mounting structure fairing of gas turbine engine104US 5,123,242 AGeneral Electric Company · 1992
- Devices using a medium having a high heat transfer rate103US 7,220,365 B2New Qu Energy Ltd. · 2007
- Tubular heat exchange systems97US 9,200,855 B2Honeywell International Inc. · 2015
- Heat exchanger system for a gas turbine engine86US 6,106,229 AUnited Technologies Corporation · 2000