F24B 1/188
Characterised by use of heat exchange means
Official title: characterised by use of heat exchange means {, e.g. using a particular heat exchange medium, e.g. oil, gas} (condition responsive controls for regulating combustion F24B1/187)
F24B1/188 (Characterised by use of heat exchange means) appears on 255 US grants and 39 published applications in this corpus.
Search patents in F24B- Granted patents
- 255
- Published applications
- 39
- Assignees
- 58
- Inventors
- 314
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 26 | 0 |
| 1978 | 33 | 0 |
| 1979 | 26 | 0 |
| 1980 | 33 | 0 |
| 1981 | 25 | 0 |
| 1982 | 13 | 0 |
| 1983 | 11 | 0 |
| 1984 | 15 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 3 |
| 2009 | 1 | 2 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 3 |
| 2014 | 1 | 2 |
| 2015 | 2 | 5 |
| 2016 | 2 | 1 |
| 2017 | 3 | 1 |
| 2018 | 1 | 5 |
| 2019 | 1 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 3 |
| 2022 | 2 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Bidirectional blowing fireplace fan20 May 2025US 12,305,657 B1
- Control system for a fuel burning appliance and a method of operating such an appliance7 May 2024US 11,976,821 B2Wolf Steel Ltd.
- Safely barrier heat exchanger1 Aug 2023US 11,713,883 B2
- Remote monitoring of fired heaters21 Jun 2022US 11,365,886 B2Uop LLC
- Fireplace system, heat exchanger and method25 Jan 2022US 11,231,177 B2FPI Fireplace Products International Ltd.
- Portable combination stove and space heater16 Nov 2023US 2023/0366558 A1
- Control system for a fuel burning appliance and a method of operating such an appliance9 Sep 2021US 2021/0278087 A1Wolf Steel Ltd.
- Safety barrier heat exchanger2 Sep 2021US 2021/0270462 A1
- Modular oven for multiple use8 Jul 2021US 2021/0207809 A1
- Wood Burning Stove Assembly27 Aug 2020US 2020/0271324 A1
Most cited
By later US patents
- Heat extracting apparatus for fireplaces71US 4,271,814 A1981
- Heater38US 3,981,292 ALilly Industries Limited · 1976
- Self-powered automatic secondary air controllers for woodstoves and small furnaces36US 5,014,680 AThe United States of America as represented by the United States Department of Energy · 1991
- Fireplace systems34US 4,026,263 A1977
- Fireplace furnace30US 4,010,729 AJoglex Corporation · 1977