C21B 13/026
Heated electrically
Official title: {heated electrically}
C21B13/026 (Heated electrically) appears on 15 US grants and 11 published applications in this corpus.
Search patents in C21B- Granted patents
- 15
- Published applications
- 11
- Assignees
- 12
- Inventors
- 32
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 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 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 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 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Iron (DRI) between a DRI source and processing equipment for the DRI23 Sep 2025US 12,421,564 B2Midrex Technologies, Inc.
- Method and system for heating direct reduced iron (DRI) between a DRI source and processing equipment for the DRI23 Apr 2024US 11,965,221 B2Midrex Technologies, Inc.
- Systems and methods for generating carbon dioxide for use as a reforming oxidant in making syngas or reformed gas4 Sep 2018US 10,065,857 B2Midrex Technologies, Inc.
- Apparatus for manufacturing molten metal31 Jan 2017US 9,557,109 B2Kobe Steel, Ltd.
- Apparatus for manufacturing molten metal27 Sep 2016US 9,453,678 B2Kobe Steel, Ltd.
- Method and system for removing carbon deposit at electric heating system in a direct reduction plant utilizing hydrogen19 Jun 2025US 2025/0197956 A1Midrex Technologies, Inc.
- Processes and methods for the production of iron and steel3 Oct 2024US 2024/0327937 A1Calix, Inc.
- Method of steel smelting directly from iron ore15 Feb 2024US 2024/0052440 A1Siec Badawcza Lukasiewicz Instytut Metalurgii Zelaza Im. Stanislawa Staszica W Gliwicach
- Method and system for heating direct reduced iron (dri) between a dri source and processing equipment for the dri19 Oct 2023US 2023/0332259 A1Midrex Technologies, Inc.
- Method for recycling spent reduction gas in a direct reduction of iron ore system utilizing an electric gas heater16 Feb 2023US 2023/0052345 A1Midrex Technologies, Inc.
Most cited
By later US patents
- Method for reducing particulate iron oxide to molten iron with solid reductant8US 4,179,278 AMidrex Corporation · 1979
- Method and apparatus for the reduction of ores, especially iron ores6US 4,001,008 AVereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellschaft · 1977
- Method for reducing particulate iron oxide to metallic iron with solid reductant6US 4,082,543 AMidrex Corporation · 1978
- Method for reducing particulate iron oxide to molten iron with solid reductant and oxy-fuel burners5US 4,306,903 AMidrex Corporation · 1981
- Systems and methods for generating carbon dioxide for use as a reforming oxidant in making syngas or reformed gas4US 10,065,857 B2Midrex Technologies, Inc. · 2018