C21B 9/04
With combustion shaft
Official title: with combustion shaft
C21B9/04 (With combustion shaft) appears on 10 US grants and 8 published applications in this corpus.
Search patents in C21B- Granted patents
- 10
- Published applications
- 8
- Assignees
- 10
- Inventors
- 28
- Latest grant
- 12 Oct 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 4 |
| 2013 | 2 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Top combustion stove12 Oct 2021US 11,142,804 B2Paul Wurth Deutschland GmbH
- Combustion chamber wall and a method of manufacturing a combustion chamber wall16 Apr 2019US 10,260,749 B2ROLLS-ROYCE plc
- Apparatus and method for heating a blast furnace stove9 Jan 2018US 9,863,013 B2Linde Aktiengesellschaft
- Method for operating a regenerative heater19 Aug 2014US 8,807,994 B2Paul Wurth S. A.
- Method of demolishing furnace of multilayered-refractory structure12 Nov 2013US 8,578,582 B2Nippon Steel Engineering Co., Ltd.
- Combustion control method and combustion control device for hot blast stove18 Jun 2026US 2026/0168451 A1Jfe Steel Corporation
- Top combustion stove29 Nov 2018US 2018/0340237 A1Paul Wurth Refractory & Engineering GmbH
- Combustion chamber wall and a method of manufacturing a combustion chamber wall27 Aug 2015US 2015/0241062 A1ROLLS-ROYCE plc
- Method for heating a blast furnace stove23 Aug 2012US 2012/0214115 A1
- Apparatus and method for heating a blast furnace stove23 Aug 2012US 2012/0214116 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Ceramic burner for combustion chamber for hot-blast stove9US 4,086,052 ADidier-Werke AG · 1978
- Hot-blast stove for a blast furnace6US 4,005,982 ADidier-Werke AG · 1977
- Combustion system4US 3,947,226 AKrupp-Koppers GmbH · 1976
- Combustion chamber wall and a method of manufacturing a combustion chamber wall2US 10,260,749 B2ROLLS-ROYCE plc · 2019
- Hot blast stove1US 3,947,245 AKoppers Company, Inc. · 1976