C21B 11/10
In electric furnaces
Official title: in electric furnaces
C21B11/10 (In electric furnaces) appears on 56 US grants and 91 published applications in this corpus.
Search patents in C21B- Granted patents
- 56
- Published applications
- 91
- Assignees
- 57
- Inventors
- 209
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 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 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 3 |
| 2010 | 0 | 5 |
| 2011 | 4 | 1 |
| 2012 | 0 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 3 |
| 2015 | 3 | 2 |
| 2016 | 2 | 1 |
| 2017 | 0 | 2 |
| 2018 | 0 | 3 |
| 2019 | 1 | 3 |
| 2020 | 2 | 3 |
| 2021 | 2 | 3 |
| 2022 | 5 | 5 |
| 2023 | 1 | 4 |
| 2024 | 1 | 10 |
| 2025 | 7 | 10 |
| 2026 | 3 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Agglomerated stone for use in an electric furnace12 May 2026US 12,624,405 B2ThyssenKrupp Steel Europe AG
- Systems and methods for steel production14 Apr 2026US 12,601,020 B2Pathfinder Holdings Corp.
- Method of producing molten iron using electric furnace including video device3 Mar 2026US 12,566,029 B2Jfe Steel Corporation
- Production of iron30 Dec 2025US 12,509,745 B2Technological Resources Pty. Limited
- Method for manufacturing molten iron with electric arc furnace9 Dec 2025US 12,492,439 B2Jfe Steel Corporation
- Novel process for the smelting of a blend of hot and cold metalliferous feedstock material yielding reduced carbon emissions1 Oct 2026US 2026/0297695 A1Metix (Proprietary) Limited
- Method for producing molten pig iron17 Sep 2026US 2026/0275434 A1Jfe Steel Corporation
- A method for manufacturing molten pig iron into an electrical smelting furnace10 Sep 2026US 2026/0265845 A1
- Method for manufacturing pig iron in a production line comprising an electrical smelting furnace10 Sep 2026US 2026/0265850 A1
- A method of manufacturing molten pig iron into an electrical smelting unit3 Sep 2026US 2026/0258514 A1
Most cited
By later US patents
- Method for direct metal making by microwave energy25US 6,277,168 B12001
- Method of treating waste produced during stainless steel making19US 4,004,918 AJapan Metals & Chemicals Co., Ltd. · 1977
- Method and apparatus for improved EAF steelmaking17US 6,342,086 B12002
- Apparatus and method for the melt reduction of iron oxides14US 3,940,551 AAllmanna Svenska Elektriska Aktiebolaget · 1976
- DC arc furnace14US 5,590,152 AIshikawajima-Harima Jukogyo Kabushiki Kaisha · 1996