F27B 3/183
Charging of arc furnaces vertically through the roof
Official title: {Charging of arc furnaces vertically through the roof, e.g. in three points}
F27B3/183 (Charging of arc furnaces vertically through the roof) appears on 123 US grants and 65 published applications in this corpus.
Search patents in F27B- Granted patents
- 123
- Published applications
- 65
- Assignees
- 73
- Inventors
- 236
- Latest grant
- 3 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 2 |
| 2002 | 6 | 7 |
| 2003 | 5 | 5 |
| 2004 | 5 | 3 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 2 |
| 2010 | 3 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 5 |
| 2013 | 0 | 5 |
| 2014 | 0 | 5 |
| 2015 | 5 | 4 |
| 2016 | 5 | 7 |
| 2017 | 4 | 2 |
| 2018 | 7 | 3 |
| 2019 | 2 | 1 |
| 2020 | 4 | 6 |
| 2021 | 2 | 1 |
| 2022 | 3 | 0 |
| 2023 | 1 | 0 |
| 2024 | 3 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Continuous concentrate feeding equipment3 Sep 2024US 12,077,397 B2Mitsubishi Materials Corporation
- High-temperature flue gas recovery apparatus for melting furnace26 Mar 2024US 11,940,216 B1Zhejiang Hailiang Co., Ltd.
- Electric furnace13 Feb 2024US 11,898,797 B2Nippon Steel Corporation
- Feeder device utilized in electric arc furnace, and flue gas and temperature control method20 Jun 2023US 11,680,749 B2Cisdi Engineering Co., Ltd
- Multi-chamber melting furnace and method for melting non-ferrous scrap metal1 Nov 2022US 11,486,642 B2Gautschi Engineering GmbH
- Method of producing molten iron2 Jan 2025US 2025/0003684 A1Jfe Steel Corporation
- Continuous concentrate feeding equipment28 Oct 2021US 2021/0331880 A1Mitsubishi Materials Corporation
- Apparatus and method for melting metal material10 Sep 2020US 2020/0284512 A1Danieli & C. Officine Meccaniche SpA
- Electric furnace12 Mar 2020US 2020/0080780 A1Nippon Steel Corporation
- Electric furnace27 Feb 2020US 2020/0064071 A1Nippon Steel Corporation
Most cited
By later US patents
- Process and an apparatus for producing metals and metal alloys33US 6,289,034 B1Technologies Resources Pty Ltd. · 2001
- Smelting plant with removable shaft-like charging material preheater26US 5,153,894 AFuchs Technology AG · 1992
- Apparatus for continuous steelmaking18US 4,543,124 AIntersteel Technology, Inc. · 1985
- Conveyor residue removal apparatus18US 4,938,866 A1990
- Method for continuous steelmaking16US 4,564,388 AIntersteel Technology, Inc. · 1986