C21B 7/166
Tuyere replacement apparatus
Official title: {Tuyere replacement apparatus}
C21B7/166 (Tuyere replacement apparatus) appears on 12 US grants and 2 published applications in this corpus.
Search patents in C21B- Granted patents
- 12
- Published applications
- 2
- Assignees
- 9
- Inventors
- 24
- Latest grant
- 1 Jun 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 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 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Extraction device for a tuyere part1 Jun 2021US 11,021,764 B2Paul Wurth S. A.
- Tuyere remover1 Sep 2015US 9,121,077 B2Tube City IMS Corporation
- Push-pull apparatus adapted for assembling and disassembling a tubular body that is to be fitted into a ring retainer on a wall member20 Jul 1999US 5,925,312 AChina Steel Corporation
- Method for repairing a hot-blast long-time cupola furnace8 Jun 1993US 5,217,658 AGeorg Fischer Aktiengesellschaft
- Device for mounting and dismounting shaft furnace tymps20 Apr 1993US 5,203,063 APaul Wurth S. A.
Most cited
By later US patents
- Apparatus for changing blast furnace tuyeres10US 4,087,084 ALouis A. Grant, Inc. · 1978
- Tuyere sealing means and silencer7US 4,285,504 AInspiration Consolidated Copper Company · 1981
- Apparatus for installing or removing shaft furnace tuyeres or tymps3US 5,127,633 APaul Wirth S.A. · 1992
- Device for mounting and dismounting shaft furnace tymps3US 5,203,063 APaul Wurth S. A. · 1993
- Silencer for use on tuyere punchers2US 4,114,865 ANoranda Mines Limited · 1978