F22B 33/02
Combinations of boilers having a single combustion apparatus in common
F22B33/02 (Combinations of boilers having a single combustion apparatus in common) appears on 12 US grants and 14 published applications in this corpus.
Search patents in F22B- Granted patents
- 12
- Published applications
- 14
- Assignees
- 12
- Inventors
- 36
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 2 |
| 2020 | 1 | 3 |
| 2021 | 2 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- F22B 33/10Of two or more superposed boilers with separate water volumes and operating3
- F22B 33/04Of boilers of furnace-tube type with boilers of water-tube type2
- F22B 33/06Of boilers of furnace-tube type with boilers of fire-tube type1
- F22B 33/08Of boilers of water-tube type with boilers of fire-tube type1
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Most cited
By later US patents
- ORC stack-system control40US 10,570,782 B2Orcan Energy AG · 2020
- Marine waste heat steam generator5US 4,054,107 ACombustion Engineering, Inc. · 1977
- System and method for heat recovery steam generators4US 9,739,478 B2General Electric Company · 2017
- Enhanced steam cycle utilizing a dual pressure recovery boiler with reheat3US 8,443,606 B2Babcock & Wilcox Power Generation Group, Inc. · 2013
- Combined liquid filtering and heating apparatus1US 3,933,129 AKDI Sylvan Pools, Inc. · 1976