F27B 3/12
Working chambers or casings
Official title: Working chambers or casings; Supports therefor
F27B3/12 (Working chambers or casings) appears on 199 US grants and 113 published applications in this corpus.
Search patents in F27B- Granted patents
- 199
- Published applications
- 113
- Assignees
- 145
- Inventors
- 380
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 3 |
| 2002 | 6 | 3 |
| 2003 | 5 | 4 |
| 2004 | 4 | 2 |
| 2005 | 3 | 4 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 5 |
| 2010 | 2 | 4 |
| 2011 | 1 | 2 |
| 2012 | 4 | 3 |
| 2013 | 5 | 4 |
| 2014 | 3 | 3 |
| 2015 | 5 | 8 |
| 2016 | 5 | 7 |
| 2017 | 3 | 4 |
| 2018 | 6 | 4 |
| 2019 | 4 | 8 |
| 2020 | 2 | 7 |
| 2021 | 5 | 3 |
| 2022 | 7 | 5 |
| 2023 | 6 | 5 |
| 2024 | 4 | 8 |
| 2025 | 3 | 6 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Metallurgical furnace11 Aug 2026US 12,704,326 B2Metso Metals Oy
- Process and system for the production of iron nuggets12 May 2026US 12,624,406 B2Carbontec Energy Corporation
- Recombinant virus, composition comprising the same, and uses thereof21 Apr 2026US 12,607,406 B2Academia Sinica
- Refractory lining design and separation via destructive hydration7 Apr 2026US 12,595,211 B2HarbisonWalker International, Inc.
- Refractory lining design and steel practice for low refractory waste, and refractory based on reclaimed low-impurity magnesia-carbon aggregate27 Jan 2026US 12,534,410 B2HarbisonWalker International Holdings, Inc.
- Hearth mixture for disposing on the hearth bottom of an electric arc furnace, use of a hearth mixture for disposing on the hearth bottom of an electric arc furnace, electric arc furnace, method for disposing a hearth mixture on the hearth bottom of an electric arc furnace and use of magnesia spinel used in a lining of a cement rotary kiln24 Sep 2026US 2026/0287256 A1Refractory Intellectual Property GmbH & Co.KG
- Recombinant virus, composition comprising the same, and uses thereof9 Jul 2026US 2026/0194298 A1Academia Sinica
- Refractory lining disposed on the bottom of a metallurgical unit for holding a molten metal, method of providing a refractory lining disposed on the bottom of a metallurgical unit for holding a molten metal, and metallurgical unit for holding a molten metal2 Jul 2026US 2026/0185774 A1Refractory Intellectual Property GmbH & Co.KG
- 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
Most cited
By later US patents
- Integral side wall and tap hole cover for an eccentric bottom tap (EBT) electric furnace83US 6,185,242 B2South Carolina Systems, Inc. · 2001
- Thermophotovoltaic generator in high temperature industrial process77US 6,538,193 B1JX Crystals Inc. · 2003
- Arc furnace roof74US 4,323,718 AHoechst Aktiengesellschaft · 1982
- Impact resistant scrap submergence device53US 9,481,918 B2Pyrotek, Inc. · 2016
- Vessel for metal smelting furnace39US 4,207,060 ADemag Aktiengesellschaft · 1980