C21B 7/007
Controlling or regulating of the top pressure
Official title: {Controlling or regulating of the top pressure}
C21B7/007 (Controlling or regulating of the top pressure) appears on 27 US grants and 9 published applications in this corpus.
Search patents in C21B- Granted patents
- 27
- Published applications
- 9
- Assignees
- 24
- Inventors
- 72
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 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 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 3 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for operating blast furnace12 May 2026US 12,624,404 B2Jfe Steel Corporation
- Blast furnace fault determination apparatus, method for determining fault in blast furnace, and method for operating blast furnace3 Jun 2025US 12,320,590 B2Jfe Steel Corporation
- Top-pressure recovery turbine deposition control21 Apr 2020US 10,626,750 B2Ecolab USA Inc.
- Monitoring system for annular scrubbers18 Dec 2018US 10,155,195 B2Primetals Technologies Austria GmbH
- Shaft furnace and method for operating a furnace13 Nov 2012US 8,309,016 B2Thyssenkrupp At.Pro Tec GmbH
- Method for operating a blast furnace plant7 Mar 2024US 2024/0077255 A1Paul Wurth S. A.
- Blast furnace plant and shutdown process26 Jan 2023US 2023/0026068 A1Danieli Corus B.V.
- Blast furnace operation method22 Dec 2022US 2022/0403477 A1Jfe Steel Corporation
- Method for operating blast furnace1 Dec 2022US 2022/0380859 A1Jfe Steel Corporation
- Blast furnace fault determination apparatus, method for determining fault in blast furnace, and method for operating blast furnace26 May 2022US 2022/0163260 A1Jfe Steel Corporation
Most cited
By later US patents
- Pressure equalization valve and technique for shaft furnace27US 4,190,074 APaul Wurth S. A. · 1980
- Apparatus for cleaning stack gas and using same for generation of electric power9US 4,007,025 AGottfried Bischoff Bau Kompl. · 1977
- Apparatus for cleaning blast-furnace exhaust gases9US 4,052,042 AGottfried Bischoff Bau kompl. Gasreiningungs-und Wasserruckkuhlungs-Anlag en Kommanditengesellschaft · 1977
- Gas-cleaning apparatus and method for high-pressure blast furnace9US 4,152,123 AGottfried Bischoff Bau kompl. Gasreinigungs- und Wasserruckkuhlanlagen GmbH & Co. Kommanditgesellschaft · 1979
- Chemical reaction furnace system8US 4,072,006 AKawasaki Jukogyo Kabushiki Kaisha · 1978