F22B 31/04
Heat supply by installation of two or more combustion apparatus
Official title: Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
F22B31/04 (Heat supply by installation of two or more combustion apparatus) appears on 84 US grants and 38 published applications in this corpus.
Search patents in F22B- Granted patents
- 84
- Published applications
- 38
- Assignees
- 49
- Inventors
- 180
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 0 |
| 2002 | 2 | 4 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 5 |
| 2006 | 0 | 4 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 5 |
| 2010 | 2 | 0 |
| 2011 | 3 | 0 |
| 2012 | 1 | 3 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 2 | 3 |
| 2018 | 1 | 3 |
| 2019 | 4 | 2 |
| 2020 | 2 | 3 |
| 2021 | 3 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method for heating a heat exchange medium in a fluidized bed boiler, a fluidized bed boiler, and a loopseal heat exchanger30 Dec 2025US 12,510,241 B2Valmet Technologies Oy
- Comprehensive utilization system for high-temperature gasification and low-nitrogen combustion of biomass17 Jan 2023US 11,555,610 B2Guangdong University of Technology
- Method and a system for maintaining steam temperature with decreased loads of a steam turbine power plant comprising a fluidized bed boiler12 Apr 2022US 11,300,288 B2Valmet Technologies Oy
- Hydrogen boiler based on coal gasification and water decomposition28 Sep 2021US 11,130,922 B2Fujian Jungie New Material Technology Co., Ltd.
- Heat recovery surfaces arrangement in a recovery boiler31 Aug 2021US 11,105,499 B2Andritz Inc.
- Method for Preparing Steam Using Waste Heat3 Jul 2025US 2025/0216068 A1LG Chem.Ltd.
- A method for heating a heat exchange medium in a fluidized bed boiler, a fluidized bed boiler, and a loopseal heat exchanger4 Jan 2024US 2024/0003534 A1Valmet Technologies Oy
- Comprehensive utilization system for high-temperature gasification and low-nitrogen combustion of biomass11 Feb 2021US 2021/0041099 A1Guangdong University of Technology
- A method and a system for maintaining steam temperature with decreased loads of a steam turbine power plant comprising a fluidized bed boiler19 Nov 2020US 2020/0363056 A1Valmet Technologies Oy
- Method and apparatus for capturing carbon dioxide during combustion of carbon containing fuel19 Nov 2020US 2020/0363060 A1Washington University
Most cited
By later US patents
- Supplying heat to an externally fired power system66US 5,588,298 AExergy S.P.A. · 1996
- Method and apparatus for producing superheated steam using heat from the incineration of waste material59US 6,133,499 AMitsubishi Heavy Industries, Ltd. · 2000
- Energy recovery system for an incinerator51US 4,485,746 AKelley Company, Inc. · 1984
- Compact low-nox high-efficiency heating apparatus33US 6,289,851 B1Institute of Gas Technology · 2001
- Method and apparatus for generating electric power by combusting wastes20US 6,381,962 B1Ebara Corporation · 2002