F27D 2099/0021
Arc heating
Official title: {Arc heating}
F27D2099/0021 (Arc heating) appears on 46 US grants and 38 published applications in this corpus.
Search patents in F27D- Granted patents
- 46
- Published applications
- 38
- Assignees
- 39
- Inventors
- 123
- Latest grant
- 31 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 2 |
| 2002 | 2 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 4 |
| 2016 | 1 | 4 |
| 2017 | 2 | 3 |
| 2018 | 5 | 2 |
| 2019 | 3 | 2 |
| 2020 | 0 | 2 |
| 2021 | 1 | 0 |
| 2022 | 3 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 3 |
| 2025 | 0 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cassette design drop out box, combustion chamber, duct and electric arc furnace upper shell system31 Dec 2024US 12,181,221 B2Amerifab, Inc.
- Chaotic stirring device and method combining plasma arc smelting and permanent magnet30 Aug 2022US 11,428,471 B2Shanghai University
- Apparatus and method to electrically power an electric arc furnace5 Jul 2022US 11,382,191 B2Danieli Automation S.P.A.
- Cassette design drop out box, combustion chamber, duct and electric arc furnace upper shell system21 Jun 2022US 11,365,936 B2Amerifab, Inc.
- Device and method for plasma arc melting through magnetostatic soft-contact stirring and compounding6 Jul 2021US 11,057,966 B2Shanghai University
- Method of smelting steel and method of producing steel30 Apr 2026US 2026/0117332 A1Jfe Steel Corporation
- Electrode clamping device and power transmission vehicle25 Dec 2025US 2025/0393106 A1Hunan Huaxia Tebian Co., Ltd.
- Dual electrode dc arc furnace13 Nov 2025US 2025/0347465 A1
- Power supply system for arc furnace and associated arc furnace and method4 Sep 2025US 2025/0280476 A1GE Energy Power Conversion Technology Limited
- Method to supply electric power to furnaces for melting and/or heating metal materials, and corresponding apparatus15 May 2025US 2025/0155195 A1Danieli Automation S.P.A.
Most cited
By later US patents
- Concentric electrode DC arc systems and their use in processing waste materials35US 5,673,285 AElectro-Pyrolysis, Inc. · 1997
- Direct current electric arc furnace34US 5,526,374 AMannesmann Aktiengesellschaft · 1996
- Feedback control system for the impedance control of an electric arc furnace15US 5,255,285 AVoest-Alpine Industrieanlagenbau Gesellschaft m.b.H. · 1993
- Work support for vacuum electric furnaces14US 4,246,434 AAbar Corporation · 1981
- DC arc furnace14US 5,590,152 AIshikawajima-Harima Jukogyo Kabushiki Kaisha · 1996