C21B 7/106
Cooling of the furnace bottom
Official title: {Cooling of the furnace bottom}
C21B7/106 (Cooling of the furnace bottom) appears on 27 US grants and 23 published applications in this corpus.
Search patents in C21B- Granted patents
- 27
- Published applications
- 23
- Assignees
- 22
- Inventors
- 69
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 3 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 4 | 1 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for detecting fluctuation of solidified layer and method for operating blast furnace3 Feb 2026US 12,540,363 B2Jfe Steel Corporation
- Cooling plate for a metallurgical furnace8 Jul 2025US 12,351,883 B2Paul Wurth Deutschland GmbH
- Cooling box for a shaft furnace27 Dec 2022US 11,535,904 B2Paul Wurth Italia S.P.A.
- Smelting process and apparatus28 Jun 2022US 11,371,105 B2Tata Steel Limited
- Copper cooling plate with multilayer protrusions comprising wear resistant material, for a blast furnace3 May 2022US 11,319,604 B2ArcelorMittal
- Method for detecting fluctuation of solidified layer and method for operating blast furnace18 May 2023US 2023/0151448 A1Jfe Steel Corporation
- Cooling plate for a metallurgical furnace16 Mar 2023US 2023/0077841 A1Paul Wurth Deutschland GmbH
- Multiple-channel refrigerated panel for blast furnaces and other industrial furnaces21 Jul 2022US 2022/0228808 A1Cecal Tecno Ind E Comercio De Equipamentos Sob Encomenda Ltda
- Cooling box for a shaft furnace2 Dec 2021US 2021/0371943 A1Paul Wurth Italia S.P.A.
- Copper cooling plate with multilayer protrusions comprising wear resistant material, for a blast furnace23 Jan 2020US 2020/0024677 A1ArcelorMittal
Most cited
By later US patents
- Heat exchanger37US 7,901,617 B2Auckland Uniservices Limited · 2011
- Refractory lining for metallurgical vessel13US 6,673,306 B2North American Refractories Co. · 2004
- Refractory lining for metallurgical vessel11US 6,787,098 B2North American Refractories Co. · 2004
- Blast furnace bottom cooling arrangement4US 4,061,317 A1977
- Furnace bottom construction with seal4US 4,157,815 AInland Steel Company · 1979