F22B 37/645
Involving upper vertically-disposed water tubes and lower horizontally- or helically disposed water
Official title: {involving upper vertically-disposed water tubes and lower horizontally- or helically disposed water tubes}
F22B37/645 (Involving upper vertically-disposed water tubes and lower horizontally- or helically disposed water) appears on 8 US grants and 2 published applications in this corpus.
Search patents in F22B- Granted patents
- 8
- Published applications
- 2
- Assignees
- 7
- Inventors
- 14
- Latest grant
- 31 Mar 2009
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 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 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Suspended steam boiler31 Mar 2009US 7,509,928 B2Hitachi Power Europe GmbH
- Furnace wall structure11 Jul 2006US 7,073,451 B1Babcock-Hitachi Kabushiki Kaisha
- Spiral furnace support tube strap26 Mar 1996US 5,501,181 AThe Babcock & Wilcox Company
- Spiral to vertical furnace tube transition12 Sep 1989US 4,864,973 AThe Babcock & Wilcox Company
- Steam generator, especially a continuous flow steam generator1 Apr 1986US 4,579,089 AKraftwerk Union Aktiengesellschaft
Most cited
By later US patents
- Apparatus for suspension of a tube wall9US 4,123,994 ABalcke-Durr Aktiengesellschaft · 1978
- Combustion chamber wall9US 4,347,810 ASulzer Brothers Limited · 1982
- Vapor generator utilizing vertical bars for supporting angularly arranged furnace boundary wall fluid flow tubes7US 4,175,519 AFoster Wheeler Energy Corporation · 1979
- Spiral to vertical furnace tube transition6US 4,864,973 AThe Babcock & Wilcox Company · 1989
- Steam generator, especially a continuous flow steam generator1US 4,579,089 AKraftwerk Union Aktiengesellschaft · 1986