F22B 9/00
Steam boilers of fire-tube type, i.e. the flue gas from a combustion
Official title: Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body
F22B9/00 (Steam boilers of fire-tube type, i.e. the flue gas from a combustion) appears on 65 US grants and 64 published applications in this corpus.
Search patents in F22B- Granted patents
- 65
- Published applications
- 64
- Assignees
- 56
- Inventors
- 143
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 4 |
| 2008 | 2 | 2 |
| 2009 | 1 | 4 |
| 2010 | 2 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 4 |
| 2013 | 2 | 2 |
| 2014 | 1 | 5 |
| 2015 | 2 | 2 |
| 2016 | 2 | 3 |
| 2017 | 3 | 5 |
| 2018 | 5 | 4 |
| 2019 | 3 | 7 |
| 2020 | 6 | 2 |
| 2021 | 3 | 5 |
| 2022 | 3 | 5 |
| 2023 | 3 | 1 |
| 2024 | 3 | 0 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Integrated steam generator and superheater with process gas in ammonia synloop15 Jul 2025US 12,358,803 B2Kellogg Brown & Root LLC
- Modular pressurized coal combustion (MPCC) for flexible generation11 Feb 2025US 12,222,101 B2Washington University
- Cylindrical burner apparatus and method24 Dec 2024US 12,173,893 B2Gastech Engineering LLC
- Condensing, ultra-low NOx gas-fired humidifier26 Mar 2024US 11,940,178 B2DRI-STEEM Corporation
- Burner with adjustable end cap and method of operating same19 Mar 2024US 11,933,491 B2Cleaver-Brooks, Inc.
- Fuel saving super steam boilers2 Jul 2026US 2026/0185696 A1Universal Dynamics Inovasyon Ve Teknoloji Anonim Sirketi
- Modular pressurized coal combustion plant (mccp) for flexible generation26 Jun 2025US 2025/0207772 A1Washington University
- Condensing, Ultra-Low NOx Gas-Fired Humidifier9 Jan 2025US 2025/0012462 A1DRI-STEEM Corporation
- Electric steam control method, electric steam control system, and steam cleaner2 Feb 2023US 2023/0036413 A1Nanjing Dayoo Electronics Technology Co., Ltd.
- Condensing, Ultra-Low NOx Gas-Fired Humidfier22 Dec 2022US 2022/0404041 A1DRI-STEEM Corporation
Most cited
By later US patents
- Steam cooker and related superheater35US 7,418,960 B2Premark FEG L.L.C. · 2008
- Oxidative coupling of methane for olefin production34US 9,944,573 B2Siluria Technologies, Inc. · 2018
- Pulsating combustion device28US 5,168,835 ASerchen Corporation · 1992
- Heat exchanger27US 4,203,392 A1980
- Oxidative coupling of methane for olefin production24US 10,407,361 B2Siluria Technologies, Inc. · 2019