F22B 37/142
Involving horizontally-or helically-disposed water tubes
Official title: {involving horizontally-or helically-disposed water tubes, e.g. walls built-up from horizontal or helical tubes}
F22B37/142 (Involving horizontally-or helically-disposed water tubes) appears on 3 US grants and 0 published applications in this corpus.
Search patents in F22B- Granted patents
- 3
- Published applications
- 0
- Assignees
- 3
- Inventors
- 6
- Latest grant
- 13 Apr 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Horizontal spiral tube boiler convection pass enclosure design13 Apr 2004US 6,718,915 B1The Babcock & Wilcox Company
- Once-through steam generator having spirally disposed evaporator tubes9 Nov 1999US 5,979,369 ASeimens Aktiengesellschaft
- Uniform distribution heat-transfer pipe unit for double-layer fluids20 Apr 1993US 5,203,285 AMitsubishi Jukogyo Kabushiki Kaisha
No published applications in this class yet.
Most cited
By later US patents
- Once-through steam generator having spirally disposed evaporator tubes3US 5,979,369 ASeimens Aktiengesellschaft · 1999
- Uniform distribution heat-transfer pipe unit for double-layer fluids1US 5,203,285 AMitsubishi Jukogyo Kabushiki Kaisha · 1993
- Horizontal spiral tube boiler convection pass enclosure design1US 6,718,915 B1The Babcock & Wilcox Company · 2004