F22B 13/005
Steam boilers of fire-box type, i.e. boilers where both combustion chambers and
Official title: {with flues, other than fire tubes}
F22B13/005 (Steam boilers of fire-box type, i.e. boilers where both combustion chambers and) appears on 13 US grants and 5 published applications in this corpus.
Search patents in F22B- Granted patents
- 13
- Published applications
- 5
- Assignees
- 7
- Inventors
- 20
- Latest grant
- 12 Oct 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for waste heat recovery and emission reduction12 Oct 2021US 11,143,396 B2Preferred Utilities Manufacturing Corporation
- Water vaporizer with intermediate steam superheating pass20 Mar 2012US 8,136,582 B2Modine Manufacturing Company
- Steam generator20 Jun 2000US 6,076,518 ARational AG
- Annular tube heat exchanger6 Jun 2000US 6,070,559 AArmstrong International, Inc.
- Gas fired humidifier6 Oct 1998US 5,816,496 A
- Tubular Boiler with Incorporated Oven7 Jul 2022US 2022/0214038 A1
- Apparatus for Firetube Boiler and Ultra Low NOx Burner7 Jan 2021US 2021/0003277 A1
- Method and Apparatus for Waste Heat Recovery and Emission Reduction20 Jun 2019US 2019/0186730 A1Preferred Utilities Manufacturing Corporation
- Flue baffle for gas-fired hot water tanks13 Aug 2009US 2009/0199788 A1
- Water vaporizer with intermediate steam superheating pass22 Feb 2007US 2007/0039725 A1Modine Manufacturing Company
Most cited
By later US patents
- Combination gas combuster and heat pipe evaporator device13US 4,825,814 AStirling Thermal Motors, Inc. · 1989
- Gas fired humidifier13US 5,816,496 A1998
- Wound boiler7US 4,261,299 A1981
- Annular tube heat exchanger7US 6,070,559 AArmstrong International, Inc. · 2000
- Wound boiler with removable and replaceable combustion chamber3US 4,425,875 A1984