F27D 3/0025
Charging or loading melting furnaces with material in the solid state
Official title: {Charging or loading melting furnaces with material in the solid state}
F27D3/0025 (Charging or loading melting furnaces with material in the solid state) appears on 291 US grants and 188 published applications in this corpus.
Search patents in F27D- Granted patents
- 291
- Published applications
- 188
- Assignees
- 197
- Inventors
- 700
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 7 | 0 |
| 1987 | 13 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 10 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 2 | 3 |
| 2002 | 8 | 4 |
| 2003 | 9 | 7 |
| 2004 | 5 | 15 |
| 2005 | 6 | 6 |
| 2006 | 2 | 4 |
| 2007 | 2 | 4 |
| 2008 | 4 | 7 |
| 2009 | 4 | 10 |
| 2010 | 10 | 7 |
| 2011 | 5 | 7 |
| 2012 | 5 | 11 |
| 2013 | 4 | 6 |
| 2014 | 5 | 13 |
| 2015 | 12 | 14 |
| 2016 | 9 | 12 |
| 2017 | 7 | 5 |
| 2018 | 12 | 11 |
| 2019 | 11 | 10 |
| 2020 | 6 | 7 |
| 2021 | 6 | 4 |
| 2022 | 7 | 6 |
| 2023 | 3 | 2 |
| 2024 | 7 | 5 |
| 2025 | 1 | 5 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for distributing loads in a metal furnace1 Sep 2026US 12,723,813 B2Tecnored Desenvolvimento TecnolóGico S/A
- Vortex metal insertion furnace control system23 Jun 2026US 12,663,214 B2Gpre IP, LLC
- Method of producing molten iron using electric furnace including video device3 Mar 2026US 12,566,029 B2Jfe Steel Corporation
- DC plasma electric arc furnace for processing solid waste, method of processing solid waste, and products formed from DC plasma electric arc furnace13 May 2025US 12,298,077 B2
- Melting furnace purge system and method3 Dec 2024US 12,158,306 B2Fives North American Combustion, Inc.
- Shaft furnace for the smelting of copper and method therefor20 Aug 2026US 2026/0242893 A1SMS group GmbH
- A method of treating a silicon carbide bearing material25 Jun 2026US 2026/0176714 A1Sibanye Stillwater Limited
- Optimized melting of compacted dri12 Feb 2026US 2026/0043103 A1Primetals Technologies Austria GmbH
- Electric furnace20 Mar 2025US 2025/0093100 A1Hyundai Steel Company
- Melting furnace purge system and method13 Feb 2025US 2025/0052501 A1Fives North American Combustion, Inc.
Most cited
By later US patents
- Surgical acid141US 4,048,987 A1977
- Method for agitating metals and producing alloys140US 4,743,428 ACominco Ltd. · 1988
- Method and apparatus for dissolving nickel in molten zinc128US 4,717,540 ACominco Ltd. · 1988
- Method for liquid mixing126US 4,018,598 AThe Steel Company of Canada, Limited · 1977
- Aluminum scrap melting process and apparatus123US 6,074,455 AMetaullics Systems Co., L.P. · 2000