C21B 7/005
Bleeder valves or slides
Official title: {Bleeder valves or slides}
C21B7/005 (Bleeder valves or slides) appears on 11 US grants and 4 published applications in this corpus.
Search patents in C21B- Granted patents
- 11
- Published applications
- 4
- Assignees
- 7
- Inventors
- 18
- Latest grant
- 18 Dec 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 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 | 1 | 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 | 1 | 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 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Monitoring system for annular scrubbers18 Dec 2018US 10,155,195 B2Primetals Technologies Austria GmbH
- Arrangement for burning blast furnace off-gas from a bleeder valve and corresponding bleeder valve27 Jan 2015US 8,940,226 B2Paul Wurth S. A.
- Bleeder valve for pressurized furnace11 Oct 2011US 8,034,284 B2Paul Wurth S. A.
- Valve system9 Jun 1998US 5,762,099 AIscor Limited
- Multi-purpose draining valve10 Jan 1989US 4,796,665 ASociete Lorraine de Laminage Continu-Sollac
- Monitoring system for annular scrubbers19 Oct 2017US 2017/0296966 A1Primetals Technologies Austria GmbH
- Pressure relief valve for pressurized furnace10 Aug 2017US 2017/0226600 A1Primetals Technologies Austria GmbH
- Arrangement for burning blast furnace off-gas from a bleeder valve and corresponding bleeder valve8 Mar 2012US 2012/0055382 A1Paul Wurth S. A.
- Bleeder valve for pressurized furnace12 Aug 2010US 2010/0201051 A1Paul Wurth S. A.
Most cited
By later US patents
- Pressure equalization valve and technique for shaft furnace27US 4,190,074 APaul Wurth S. A. · 1980
- Valve system and improved actuator therefor15US 4,158,367 AS. A. des Anciens Etablissements Paul Wurth · 1979
- Damper assembly for high temperature or corrosive gases10US 4,027,654 AAmerican Air Filter Company, Inc. · 1977
- Pressure equalization apparatus and method8US 4,162,784 AS. A. des Anciens Etablissements Paul Wurth · 1979
- Valve system4US 5,762,099 AIscor Limited · 1998