C21C 5/4693
Skull removal
Official title: {Skull removal; Cleaning of the converter mouth}
C21C5/4693 (Skull removal) appears on 13 US grants and 5 published applications in this corpus.
Search patents in C21C- Granted patents
- 13
- Published applications
- 5
- Assignees
- 12
- Inventors
- 39
- Latest grant
- 13 May 2008
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 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 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for unlocking nozzles of reactors13 May 2008US 7,371,342 B2Corporation Nacional del Cobre de Chile
- Method and apparatus for slag-free teeming of metal melt from a metallurgical melt vessel31 Dec 2002US 6,500,382 B2SMS Demag AG
- Method and apparatus for removing deposit in non-ferrous smelting furnace9 Nov 1999US 5,980,816 ANippon Mining & Metals Co., Ltd.
- Removal of slag and/or steel build-up from lances3 Aug 1999US 5,932,169 AA. H. Tallman Bronze Company Limited
- Multipurpose lance2 Feb 1999US 5,865,876 ALTV Steel Company, Inc.
- Robotic system and method for the cleaning of casting ladles in electric arc furnaces5 Jul 2007US 2007/0152385 A1
- Method for unlocking nozzles of reactors12 Oct 2006US 2006/0226254 A1Corporation Nacional del Cobre de Chile
- Deskulling lance2 Dec 2004US 2004/0239015 A1
- System for elimination of accretions in air blowing tuyeres in Converters or pyrometallurgical furnaces13 Nov 2003US 2003/0209846 A1
- Method and apparatus for slag-free teeming of metal melt from a metallurgical melt vessel15 Nov 2001US 2001/0040321 A1SMS Demag AG
Most cited
By later US patents
- Method for eliminating nose-skulls from steelmaking vessels16US 3,960,546 AUnited States Steel Corporation · 1976
- Multipurpose lance12US 5,865,876 ALTV Steel Company, Inc. · 1999
- Lance and method for removing skulls from steelmaking vessels7US 4,322,033 APullman Berry Company · 1982
- Preventing skull accumulation on a steelmaking lance6US 5,830,259 ALTV Steel Company, Inc. · 1998
- Method and apparatus for removing deposit in non-ferrous smelting furnace6US 5,980,816 ANippon Mining & Metals Co., Ltd. · 1999