F27B 2003/125
Hearths
Official title: {Hearths}
F27B2003/125 (Hearths) appears on 18 US grants and 13 published applications in this corpus.
Search patents in F27B- Granted patents
- 18
- Published applications
- 13
- Assignees
- 21
- Inventors
- 49
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 3 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metallurgical furnace11 Aug 2026US 12,704,326 B2Metso Metals Oy
- Powder feeder system and method for recycling metal powder25 Mar 2025US 12,259,185 B2Continuum Powders Corporation
- Electric furnace13 Feb 2024US 11,898,797 B2Nippon Steel Corporation
- Self-crucible wall submerged burner furnace5 Sep 2023US 11,747,084 B2Saint-Gobain Isover
- Arc furnace bottom construction8 Jun 2021US 11,029,091 B2Outokumpu Oyj
- Furnace vessel for electric arc, metallurgical or refining furnaces and system thereof28 May 2026US 2026/0146795 A1
- Wet hearth melting systems and methods for melting solid metals23 Apr 2026US 2026/0110492 A1The Schaefer Group
- Melting method using multiple impacting flames27 Nov 2025US 2025/0362081 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Metallurgical furnace25 Apr 2024US 2024/0133629 A1Metso Metals Oy
- Powder Feeder System And Method For Recycling Metal Powder5 May 2022US 2022/0136769 A1MolyWorks Materials Corporation
Most cited
By later US patents
- Metallurgical vessel and method of using the same13US 5,879,616 AHarbison-Walker Refractories Company · 1999
- precast module leveling assembly for a metallurgical vessel7US 5,882,583 AHarbison-Walker Refractories Company · 1999
- Method and device for producing molten iron5US 6,689,182 B2Kobe Steel, Ltd. · 2004
- Process and installation for maintaining the lining of a furnace shell3US 4,755,137 AClecim · 1988
- Ladle brick leveling set3US 5,824,263 AHarbison-Walker Refractories Company · 1998