C21B 13/0046
Making metallised agglomerates or iron oxide
Official title: {making metallised agglomerates or iron oxide}
C21B13/0046 (Making metallised agglomerates or iron oxide) appears on 146 US grants and 165 published applications in this corpus.
Search patents in C21B- Granted patents
- 146
- Published applications
- 165
- Assignees
- 82
- Inventors
- 374
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 1 |
| 2002 | 3 | 7 |
| 2003 | 9 | 8 |
| 2004 | 3 | 14 |
| 2005 | 2 | 3 |
| 2006 | 3 | 9 |
| 2007 | 2 | 7 |
| 2008 | 2 | 1 |
| 2009 | 4 | 10 |
| 2010 | 7 | 11 |
| 2011 | 5 | 11 |
| 2012 | 8 | 10 |
| 2013 | 8 | 9 |
| 2014 | 6 | 4 |
| 2015 | 10 | 6 |
| 2016 | 1 | 7 |
| 2017 | 0 | 2 |
| 2018 | 3 | 6 |
| 2019 | 5 | 4 |
| 2020 | 4 | 3 |
| 2021 | 2 | 3 |
| 2022 | 3 | 4 |
| 2023 | 2 | 4 |
| 2024 | 1 | 12 |
| 2025 | 4 | 3 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process and system for the production of iron nuggets12 May 2026US 12,624,406 B2Carbontec Energy Corporation
- Method for producing sintered ore2 Sep 2025US 12,404,566 B2Jfe Steel Corporation
- Process and apparatus for direct reduction with electrically heated-up reduction gas28 Jan 2025US 12,209,293 B2Primetals Technologies Austria GmbH
- Process for the production of iron ore fines agglomerate and the agglomerated product21 Jan 2025US 12,203,150 B2Vale S.A.
- Cooperative emission reduction method for sintering using energy-carrying composite gas medium14 Jan 2025US 12,195,822 B2Central South University
- A process for producing iron oxide pellets27 Aug 2026US 2026/0250791 A1Iron Ore Company of Canada
- Exothermic iron compounds for producing iron oxide pellets27 Aug 2026US 2026/0250792 A1Iron Ore Company of Canada
- Biomass Direct Reduced Iron23 Jul 2026US 2026/0209873 A1Technological Resources Pty. Limited
- Adjusting carbon content in direct reduced iron12 Feb 2026US 2026/0043101 A1Primetals Technologies Austria GmbH
- Non-fired pellets for reduction and method for producing same12 Feb 2026US 2026/0043102 A1Jfe Steel Corporation
Most cited
By later US patents
- Method for the direct reduction of iron ore61US 4,160,663 A1979
- Method of direct iron-making / steel-making via gas or coal-based direct reduction and apparatus61US 6,648,942 B2Midrex International B.V. Rotterdam, Zurich Branch · 2003
- Direct reduction process in a rotary hearth furnace56US 5,186,741 AZia Patent Company · 1993
- Method for rapid reduction of iron oxide in a rotary hearth furnace53US 5,730,775 AMidrex International B.V. Rotterdam, Zurich Branch · 1998
- Metallic articles formed by reduction of nonmetallic articles and method of producing metallic articles50US 6,582,651 B1Geogia Tech Research Corporation · 2003