F22B 21/06
The water tubes being arranged annularly in sets
Official title: the water tubes being arranged annularly in sets, e.g. in abutting connection with drums of annular shape
F22B21/06 (The water tubes being arranged annularly in sets) appears on 25 US grants and 6 published applications in this corpus.
Search patents in F22B- Granted patents
- 25
- Published applications
- 6
- Assignees
- 19
- Inventors
- 58
- Latest grant
- 10 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 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 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Waste heat recovery boiler in producing glass beads10 May 2022US 11,326,773 B2
- Boiler25 Mar 2014US 8,677,945 B2Miura Co., Ltd.
- Radiant coolers and methods for assembling same14 Aug 2012US 8,240,366 B2General Electric Company
- Radiant syngas cooler15 Sep 2009US 7,587,995 B2Babcock & Wilcox Power Generation Group, Inc.
- Water-tube boiler20 Nov 2001US 6,318,305 B1Miura Co., Ltd.
- Waste Heat Recovery Boiler in Producing Glass Beads28 Mar 2019US 2019/0093878 A1
- Boiler21 Apr 2011US 2011/0088636 A1Miura Co., Ltd.
- Boiler26 Aug 2010US 2010/0212603 A1Miura Co., Ltd.
- Radiant coolers and methods for assembling same12 Feb 2009US 2009/0041642 A1General Electric Company
- Boiler29 Jan 2009US 2009/0025659 A1Miura Co., Ltd.
Most cited
By later US patents
- Downhole steam generator using low pressure fuel and air supply51US 4,390,062 AThe United States of America as represented by the United States Department of Energy · 1983
- Synthesis gas cooler and waste heat boiler38US 4,377,132 ATexaco Development Corporation · 1983
- Low pressure combustor for generating steam downhole19US 4,377,205 A1983
- Vertical radiation tank19US 4,513,694 A1985
- Multi-pipe once-through type boiler16US 4,825,813 AMiura Co., Ltd. · 1989