F22B 21/34
Built-up from water tubes grouped in panel form surrounding the combustion chamber
Official title: built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
F22B21/34 (Built-up from water tubes grouped in panel form surrounding the combustion chamber) appears on 72 US grants and 71 published applications in this corpus.
Search patents in F22B- Granted patents
- 72
- Published applications
- 71
- Assignees
- 42
- Inventors
- 162
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 6 | 6 |
| 2003 | 3 | 0 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 3 |
| 2007 | 1 | 0 |
| 2008 | 2 | 4 |
| 2009 | 2 | 5 |
| 2010 | 1 | 2 |
| 2011 | 0 | 4 |
| 2012 | 1 | 4 |
| 2013 | 2 | 3 |
| 2014 | 3 | 7 |
| 2015 | 3 | 5 |
| 2016 | 4 | 5 |
| 2017 | 7 | 6 |
| 2018 | 2 | 2 |
| 2019 | 9 | 2 |
| 2020 | 1 | 2 |
| 2021 | 2 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 4 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Modular pressurized coal combustion (MPCC) for flexible generation11 Feb 2025US 12,222,101 B2Washington University
- Systems and methods for Utilizing flue gas1 Nov 2022US 11,486,572 B2Suncoke Technology and Development LLC
- Natural circulation multi-circulation package boiler with superheat for steam assisted gravity drainage (SAGD) process including superheat16 Aug 2022US 11,415,314 B2The Babcock & Wilcox Company
- Solid fuel burning-furnace having a vertically mounted cylindrical combustion chamber25 May 2021US 11,015,800 B2Sullivan, Higgins, and Brion PPE, LLC
- Furnace wall, gasification unit and integrated gasification combined cycle, and method of manufacturing furnace wall23 Mar 2021US 10,954,853 B2Mitsubishi Power, Ltd.
- Modular pressurized coal combustion plant (mccp) for flexible generation26 Jun 2025US 2025/0207772 A1Washington University
- Plate-shaped heat insulator, combustion chamber, boiler and water heater27 Feb 2025US 2025/0067431 A1Ibiden Co., Ltd.
- Processes and apparatuses for heating a process fluid27 Feb 2025US 2025/0067516 A1Uop LLC
- Heat Exchanger Element and Use Thereof30 Jan 2025US 2025/0035302 A1Andritz Technology and Asset Management GmbH
- Systems and methods for utilizing flue gas17 Aug 2023US 2023/0258326 A1Suncoke Technology and Development LLC
Most cited
By later US patents
- Upflow/downflow heated tube circulating system18US 5,201,282 AThe Babcock & Wilcox Company · 1993
- Low NOx boiler16US 5,067,419 AHitachi Babcock Kabushiki-kaisha · 1991
- Systems and methods for Utilizing flue gas13US 11,486,572 B2Suncoke Technology and Development LLC · 2022
- Single drum all-welded boiler13US 4,442,800 AThe Babcock & Wilcox Company · 1984
- Boiler design11US 5,353,749 AZurn Industries, LLC · 1994