C21B 5/04
Making slag of special composition
C21B5/04 (Making slag of special composition) appears on 13 US grants and 11 published applications in this corpus.
Search patents in C21B- Granted patents
- 13
- Published applications
- 11
- Assignees
- 13
- Inventors
- 23
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing liquid pig iron from a DRI product25 Aug 2026US 12,716,105 B2SMS group GmbH
- Direct smelting process19 Jun 2018US 10,000,821 B2Tata Steel Limited
- Blast-furnace blowing coal and method for producing same18 Apr 2017US 9,624,558 B2Mitsubishi Heavy Industries, Ltd.
- Composite briquette for steelmaking or ironmaking furnace charge22 Nov 2016US 9,499,878 B2
- Titanium-containing additive16 Oct 2012US 8,287,837 B2Sachtleben Chemie GmbH
- Method for producing liquid pig iron from a DRI product8 Jun 2023US 2023/0175087 A1SMS group GmbH
- Compositions and Methods for Purification of Metals from Steel Making Waste Streams4 Nov 2021US 2021/0340025 A1Lixivia, Inc.
- Composite briquette for steelmaking or ironmaking furnace charge3 Dec 2015US 2015/0344989 A1
- Blast-furnace blowing coal and method for producing same9 Jul 2015US 2015/0191804 A1Mitsubishi Heavy Industries, Ltd.
- Direct smelting process18 Jul 2013US 2013/0180361 A1Tata Steel Limited
Most cited
By later US patents
- Process of using olivine in a blast furnace111US 3,966,456 AMolten Metal Engineering Co. · 1976
- Process for producing pig iron and cement clinker5US 5,501,721 A"Holderbank" Financiere Glarus AG · 1996
- Agglomerates containing olivine4US 4,518,428 AInternational Minerals & Chemical Corp. · 1985
- Agglomerates containing olivine for use in blast furnace4US 4,963,185 AApplied Industrial Materials Corporation · 1990
- Method for producing puzzolanic binders for the cement industry from steel slags using a reduction metal bath4US 6,676,747 B2Holcim Ltd. · 2004