C21C 2005/366
Foam slags
Official title: {Foam slags}
C21C2005/366 (Foam slags) appears on 35 US grants and 8 published applications in this corpus.
Search patents in C21C- Granted patents
- 35
- Published applications
- 8
- Assignees
- 24
- Inventors
- 68
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for manufacturing molten iron with electric arc furnace9 Dec 2025US 12,492,439 B2Jfe Steel Corporation
- Composite briquette for steelmaking or ironmaking furnace charge22 Nov 2016US 9,499,755 B2
- Method of refining molten iron19 Apr 2016US 9,315,875 B2Jfe Steel Corporation
- Process for slag foaming a non-stainless steel melt in an electric arc furnace1 Jul 2014US 8,764,879 B2SMS Siemag Aktiengesellschaft
- Process for producing foamed slag18 Mar 2014US 8,673,047 B2SMS Siemag Aktiengesellschaft
- Method for manufacturing molten iron with electric arc furnace22 Dec 2022US 2022/0403478 A1Jfe Steel Corporation
- Method to control slag foaming in a smelting process18 Feb 2021US 2021/0047702 A1Tata Steel Nederland Technology B.V.
- Composite briquette for steelmaking or ironmaking furnace charge3 Dec 2015US 2015/0344799 A1
- Method of refining molten iron13 Mar 2014US 2014/0069235 A1Jfe Steel Corporation
- Process for slag foaming a non-stainless steel melt in an electric arc furnace1 Mar 2012US 2012/0048065 A1SMS Siemag Aktiengesellschaft
Most cited
By later US patents
- Apparatus for electric steelmaking43US 5,714,113 AAmerican Combustion, Inc. · 1998
- Method and apparatus for measuring slag foaming using microwave lever meter41US 4,210,023 ASumitomo Metal Industries, Ltd. · 1980
- Method for electric steelmaking31US 5,599,375 AAmerican Combustion, Inc. · 1997
- Direct smelting process30US 6,602,321 B2Technological Resources Pty. Limited · 2003
- Process for producing an iron melt26US 5,611,838 AVoest-Alpine Industrieanlagenbau GmbH · 1997