F22B 1/18
The heat carrier being a hot gas
Official title: the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
F22B1/18 (The heat carrier being a hot gas) appears on 788 US grants and 764 published applications in this corpus.
Search patents in F22B- Granted patents
- 788
- Published applications
- 764
- Assignees
- 450
- Inventors
- 1,822
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 9 | 0 |
| 1982 | 11 | 0 |
| 1983 | 10 | 0 |
| 1984 | 26 | 0 |
| 1985 | 17 | 0 |
| 1986 | 9 | 0 |
| 1987 | 14 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 10 | 4 |
| 2002 | 9 | 5 |
| 2003 | 7 | 8 |
| 2004 | 4 | 12 |
| 2005 | 13 | 11 |
| 2006 | 14 | 26 |
| 2007 | 10 | 25 |
| 2008 | 12 | 18 |
| 2009 | 11 | 13 |
| 2010 | 12 | 30 |
| 2011 | 14 | 45 |
| 2012 | 16 | 60 |
| 2013 | 27 | 55 |
| 2014 | 35 | 69 |
| 2015 | 39 | 58 |
| 2016 | 44 | 49 |
| 2017 | 41 | 30 |
| 2018 | 35 | 38 |
| 2019 | 40 | 39 |
| 2020 | 39 | 33 |
| 2021 | 41 | 33 |
| 2022 | 32 | 23 |
| 2023 | 27 | 22 |
| 2024 | 15 | 30 |
| 2025 | 13 | 16 |
| 2026 | 10 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F22B 1/1807Using the exhaust gases of combustion engines320
- F22B 1/1838The hot gas being under a high pressure135
- F22B 1/1853Coming in direct contact with water in bulk or in sprays56
- F22B 1/1884Hot gas heating tube boilers with one or more heating tubes46
- F22B 1/1869Hot gas water tube boilers not provided for in f22b1/1807 - f22b1/186145
- F22B 1/1861Waste heat boilers with supplementary firing41
- F22B 1/1823For gas-cooled nuclear reactors36
- F22B 1/1892Systems therefor not provided for in f22b1/1807 - f22b1/186115
All 9 subgroupsShow fewer
Recent patents
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- Radiative heat exchangers for tube segments such as heating tubes in electric impedance furnaces23 Jul 2026US 2026/0208137 A1Sabic Global Technologies B.V.
- System for reheat steam temperature turndown control in heat recovery steam generators23 Jul 2026US 2026/0210275 A1General Electric Technology GmbH
- Heating energy-saving system and method for deeply utilizing waste heat of boiler plant23 Jul 2026US 2026/0210542 A1Shandong Yunqing Environmental Sci-Tech Co., Ltd
Most cited
By later US patents
- Mobile congeneration apparatus including inventive valve and boiler216US 5,517,822 AApplied Energy Systems of Oklahoma, Inc. · 1996
- Outlet silencer and heat recovery structures for gas turbine177US 6,851,514 B2Air Handling Engineering Ltd. · 2005
- Boiler system useful in mobile cogeneration apparatus158US 5,626,103 AApplied Energy Systems of Oklahoma, Inc. · 1997
- Oxidant control in co-generation installations151US 6,247,315 B1American Air Liquids, Inc. · 2001
- Method and device for keeping coke furnace chambers hot when a waste heat boiler is stopped71US 9,057,023 B2Thyssenkrupp Uhde GmbH · 2015