F22B 21/065
Involving an upper and lower drum of annular shape
Official title: {involving an upper and lower drum of annular shape}
F22B21/065 (Involving an upper and lower drum of annular shape) appears on 17 US grants and 3 published applications in this corpus.
Search patents in F22B- Granted patents
- 17
- Published applications
- 3
- Assignees
- 13
- Inventors
- 39
- Latest grant
- 25 Mar 2014
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 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 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Boiler25 Mar 2014US 8,677,945 B2Miura Co., Ltd.
- Water-tube boiler20 Nov 2001US 6,318,305 B1Miura Co., Ltd.
- Water-tube boiler7 Aug 2001US 6,269,782 B1Miura Co., Ltd.
- Water-tube boiler3 Jul 2001US 6,253,715 B1Miura Co., Ltd.
- Combustion powered cooling system31 Oct 2000US 6,138,457 AApplied Power Technology Incorporated
Most cited
By later US patents
- Synthesis gas cooler and waste heat boiler38US 4,377,132 ATexaco Development Corporation · 1983
- Multi-pipe once-through type boiler16US 4,825,813 AMiura Co., Ltd. · 1989
- Multitubular once-through boiler15US 4,453,496 AMiura Co., Ltd. · 1984
- Water-tube boiler13US 6,116,196 AMiura Co., Ltd. · 2000
- Small once-through boiler12US 5,791,299 ANippon Furnace Kogyo Kabushiki Kaisha · 1998